FPUS55 KRIW 210219 ZFPRIW Zone Forecast Product for Western and Central Wyoming National Weather Service Riverton WY 817 PM MDT Mon Apr 20 2026 WYZ020-211000- Natrona County Lower Elevations- Including the city of Casper 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds around 10 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 50. South winds 10 to 15 mph. .WEDNESDAY...Partly cloudy in the morning, then clearing. Windy with highs around 70. Southwest winds 25 to 35 mph with gusts up to 55 mph. .WEDNESDAY NIGHT...Partly cloudy. A chance of rain and snow showers after midnight. Windy with lows in the upper 30s. Southwest winds 25 to 35 mph with gusts up to 55 mph. Chance of precipitation 30 percent. .THURSDAY...Mostly cloudy. A chance of rain and snow showers in the morning, then rain and snow showers likely in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the lower 50s. Chance of precipitation 70 percent. .THURSDAY NIGHT...Rain and snow showers in the evening, then snow showers likely after midnight. Light snow accumulation. Breezy with lows in the mid 20s. Chance of precipitation 80 percent. .FRIDAY...Snow showers likely. New little or no snow accumulation. Highs around 40. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the mid 40s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s. .SUNDAY...Mostly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of snow showers. Lows in the mid 20s. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers, rain showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 30 percent. $$ WYZ017-211000- Wind River Basin- Including the cities of Riverton and Shoshoni 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. Southwest winds 10 to 15 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. South winds 10 to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers in the afternoon. Windy with highs in the upper 60s. Southwest winds 20 to 30 mph with gusts up to 45 mph, increasing to 30 to 35 mph with gusts up to 55 mph in the afternoon. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers. A chance of snow showers after midnight. Windy with lows in the upper 30s. West winds 20 to 30 mph. Gusts up to 50 mph, decreasing to 40 mph after midnight. Chance of precipitation 30 percent. .THURSDAY...Mostly cloudy. A chance of rain and snow showers in the morning, then rain and snow showers likely in the afternoon. Little or no snow accumulation. Breezy with highs in the lower 50s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Rain showers likely in the evening. Snow showers likely. Light snow accumulation possible. Breezy with lows in the mid 20s. Chance of precipitation 70 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Snow showers likely. A slight chance of thunderstorms in the afternoon. New little or no snow accumulation. Highs in the lower 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the mid 40s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the upper 40s. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid 20s. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the mid 50s. $$ WYZ018-211000- Lander Foothills- Including the city of Lander 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. Southwest winds around 10 mph. .TUESDAY...Mostly sunny. Highs in the upper 70s. South winds 10 to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers in the afternoon. Windy with highs in the mid 60s. Southwest winds 20 to 25 mph with gusts up to 40 mph, increasing to 25 to 35 mph with gusts up to 55 mph in the afternoon. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain and snow showers. Windy with lows in the mid 30s. West winds 20 to 30 mph with gusts up to 55 mph, diminishing to 15 to 20 mph with gusts up to 35 mph after midnight. Chance of precipitation 30 percent. .THURSDAY...Mostly cloudy. A chance of rain and snow showers in the morning, then rain showers likely with a slight chance of snow showers in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 50s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Rain showers likely in the evening. Snow showers likely. Light snow accumulation possible. Lows in the mid 20s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. Snow showers likely. A slight chance of thunderstorms in the afternoon. New light snow accumulation possible. Highs in the lower 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the mid 40s. .SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of snow showers with a slight chance of rain showers in the evening, then partly cloudy with a slight chance of snow showers after midnight. Lows in the mid 20s. Chance of precipitation 30 percent. .MONDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 20 percent. $$ WYZ028-211000- Rock Springs and Green River- Including the cities of Rock Springs and Green River 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. Southwest winds around 10 mph, becoming south after midnight. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the lower 70s. South winds 15 to 20 mph with gusts up to 35 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy with lows around 40. South winds 15 to 20 mph. Gusts up to 35 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers, snow showers with a slight chance of thunderstorms in the afternoon. Windy with highs around 60. Temperature falling to around 50 in the afternoon. Southwest winds 20 to 30 mph. Gusts up to 45 mph in the afternoon. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...Partly cloudy and breezy. Lows in the lower 30s. West winds 15 to 25 mph with gusts up to 40 mph. .THURSDAY...Mostly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers, a slight chance of rain showers and thunderstorms in the afternoon. Breezy with highs around 50. Chance of precipitation 30 percent. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Breezy with lows in the upper 20s. .FRIDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs around 50. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy and breezy. Lows in the lower 20s. .SATURDAY...Partly cloudy. A slight chance of thunderstorms and snow showers in the afternoon. Highs around 50. Chance of snow 20 percent. .SATURDAY NIGHT...Partly cloudy. A slight chance of. Lows in the mid 20s. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. .MONDAY...Partly cloudy in the morning, then mostly sunny with a slight chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 20 percent. $$ WYZ013-211000- Jackson Hole- Including the city of Jackson 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the mid 30s. South winds around 10 mph, becoming southeast after midnight. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s. South winds 10 to 15 mph. .TUESDAY NIGHT...Mostly cloudy with scattered showers with isolated thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the upper 30s. Southeast winds around 10 mph. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with rain and snow showers likely in the morning, then mostly cloudy with snow showers, rain showers with a chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs around 50. Southwest winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Rain showers with a slight chance of thunderstorms in the evening. Snow showers. Light snow accumulation. Breezy with lows in the upper 20s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the lower 40s. Chance of snow 90 percent. .THURSDAY NIGHT...Snow showers with possible rain showers and thunderstorms likely in the evening, then snow showers likely after midnight. New light snow accumulation. Lows in the lower 20s. Chance of precipitation 80 percent. .FRIDAY...Snow showers likely. A slight chance of thunderstorms in the afternoon. New light snow accumulation possible. Highs in the upper 30s. Chance of snow 60 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Cold with lows 15 to 20. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. .SATURDAY NIGHT...Partly cloudy. A chance of snow showers, mainly in the evening. Cold with lows around 20. Chance of snow 30 percent. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the lower 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy. A chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 30 percent. $$ WYZ003-211000- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 817 PM MDT Mon Apr 20 2026 .TONIGHT...Partly cloudy early this evening, then clearing. Lows in the mid 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Windy with highs in the mid 60s. Temperature falling into the upper 50s in the afternoon. Southwest winds 20 to 30 mph. Gusts up to 40 mph, increasing to 55 mph in the afternoon. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy. A chance of rain and snow showers in the evening, then rain and snow showers likely after midnight. Little or no snow accumulation. Windy with lows around 40. West winds 25 to 35 mph, diminishing to 15 to 25 mph after midnight. Gusts up to 60 mph. Chance of precipitation 60 percent. .THURSDAY...Snow and rain showers. A slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the upper 40s. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy. Snow and rain showers likely in the evening, then a chance of snow showers after midnight. Light snow accumulation possible. Windy with lows in the mid 20s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy with snow showers likely. A slight chance of thunderstorms in the afternoon. New little or no snow accumulation. Breezy with highs in the upper 30s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy with a slight chance of snow showers after midnight. Breezy with lows around 20. Chance of snow 30 percent. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the lower 40s. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. .SUNDAY...Partly cloudy with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 20s. .MONDAY...Partly cloudy. A slight chance of. Highs in the lower 50s. $$ WYZ004-211000- North Bighorn Basin- Including the cities of Basin, Greybull, Lovell, Powell, and Shell 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds around 10 mph, becoming south after midnight. .TUESDAY...Mostly sunny. Highs around 80. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers in the afternoon. Windy with highs in the mid 70s. Temperature falling into the upper 60s in the afternoon. South winds 15 to 20 mph with gusts up to 35 mph, becoming southwest 20 to 30 mph with gusts up to 45 mph in the afternoon. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely after midnight. Breezy with lows in the upper 30s. West winds 15 to 25 mph. Gusts up to 45 mph in the evening. Chance of rain 60 percent. .THURSDAY...A slight chance of snow showers. Showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy and much cooler with highs around 50. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy. Rain and snow showers likely in the evening, then a chance of snow showers after midnight. Little or no snow accumulation. Windy with lows in the upper 20s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. A 40 percent chance of snow showers. Breezy with highs in the mid 40s. .FRIDAY NIGHT...Partly cloudy. A chance of snow showers, mainly in the evening. Breezy with lows in the lower 20s. Chance of snow 30 percent. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the upper 40s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 20s. .SUNDAY...Partly cloudy. Highs around 50. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 20s. .MONDAY...Mostly sunny. A slight chance of. Highs in the upper 50s. $$ WYZ006-211000- Southeast Bighorn Basin- Including the cities of Ten Sleep and Worland 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds around 10 mph, becoming south after midnight. .TUESDAY...Partly cloudy in the morning, then clearing. Highs around 80. South winds around 10 mph, becoming southwest with gusts up to 25 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. A slight chance of showers in the afternoon. Windy with highs in the mid 70s. South winds 20 to 30 mph. Gusts up to 40 mph, increasing to 50 mph in the afternoon. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A 40 percent chance of showers. Windy with lows in the upper 30s. West winds 20 to 30 mph with gusts up to 45 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight. .THURSDAY...Showers with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy, cooler with highs in the lower 50s. Chance of precipitation 80 percent. .THURSDAY NIGHT...Rain showers likely in the evening. Snow showers likely. Little or no snow accumulation. Breezy with lows in the upper 20s. Chance of precipitation 70 percent. .FRIDAY...Mostly cloudy with snow showers likely. Little or no snow accumulation. Breezy with highs in the mid 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Lows in the mid 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the upper 40s. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of rain showers in the afternoon. Highs around 50. Chance of precipitation 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows around 30. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of snow showers. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 20 percent. $$ WYZ005-211000- Southwest Bighorn Basin- Including the city of Thermopolis 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. Southwest winds around 10 mph. .TUESDAY...Partly cloudy in the morning, then clearing. Highs around 80. South winds 10 to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. A chance of showers in the afternoon. Windy with highs in the lower 70s. Southwest winds 25 to 35 mph with gusts up to 50 mph. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of snow showers after midnight. Windy with lows around 40. West winds 20 to 30 mph with gusts up to 40 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight. Chance of precipitation 40 percent. .THURSDAY...Rain and snow showers likely in the morning, then showers, snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy, cooler with highs around 50. Chance of precipitation 80 percent. .THURSDAY NIGHT...Rain and snow showers in the evening, then snow showers likely after midnight. Light snow accumulation. Breezy with lows in the mid 20s. Chance of precipitation 80 percent. .FRIDAY...Snow showers likely. New little or no snow accumulation. Breezy with highs in the lower 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the mid 40s. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers in the afternoon. Highs around 50. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of rain and snow showers in the evening. Lows in the mid 20s. Chance of precipitation 20 percent. .MONDAY...Mostly sunny. A slight chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 20 percent. $$ WYZ023-211000- Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. South winds around 10 mph. .TUESDAY...Mostly sunny in the morning, then partly cloudy with scattered showers in the afternoon. Breezy with highs around 70. South winds around 10 mph, increasing to 15 to 20 mph with gusts up to 35 mph in the afternoon. Chance of rain 30 percent. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 40. Southeast winds 10 to 15 mph. .WEDNESDAY...Rain and snow showers likely in the morning, then showers, snow showers with a chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy, cooler with highs around 50. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Rain showers with a slight chance of thunderstorms in the evening. Snow showers. Light snow accumulation. Lows in the lower 30s. West winds 10 to 15 mph with gusts up to 30 mph. Chance of precipitation 90 percent. .THURSDAY...Snow showers. Rain showers with a slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the lower 40s. Chance of precipitation 90 percent. .THURSDAY NIGHT...Rain showers likely with a slight chance of thunderstorms in the evening. Mostly cloudy with snow showers likely. New light snow accumulation possible. Lows in the mid 20s. Chance of precipitation 70 percent. .FRIDAY...Snow showers likely. A slight chance of thunderstorms in the afternoon. New little or no snow accumulation. Highs in the lower 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy with a slight chance of snow showers after midnight. Lows in the lower 20s. Chance of snow 30 percent. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 40 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers with a slight chance of rain showers in the evening. Lows in the mid 20s. Chance of precipitation 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers, rain showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of precipitation 30 percent. $$ WYZ025-211000- Upper Green River Basin Foothills- Including the city of Pinedale 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the mid 30s. West winds around 10 mph early this evening. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s. Southeast winds around 10 mph, becoming south with gusts up to 25 mph in the afternoon. .TUESDAY NIGHT...Cloudy in the evening, then becoming partly cloudy. Lows in the mid 30s. Southeast winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY...Partly cloudy with a chance of rain and snow showers in the morning, then mostly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy with highs around 50. South winds 20 to 25 mph, becoming southwest 20 to 30 mph in the afternoon. Gusts up to 45 mph. Chance of precipitation 80 percent. .WEDNESDAY NIGHT...Cloudy with snow showers. Little or no snow accumulation. Breezy with lows in the upper 20s. West winds 15 to 20 mph with gusts up to 35 mph. Chance of snow 80 percent. .THURSDAY...Mostly cloudy with snow showers. A slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 40s. Chance of snow 80 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. Snow showers likely. Little or no snow accumulation. Lows in the lower 20s. Chance of snow 60 percent. .FRIDAY...Partly cloudy in the morning, then becoming mostly cloudy. Snow showers likely. A slight chance of thunderstorms in the afternoon. Light snow accumulation possible. Breezy with highs around 40. Chance of snow 60 percent. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Cold with lows around 20. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. .SATURDAY NIGHT...Partly cloudy. Cold with lows around 20. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. .MONDAY...Partly cloudy. Highs around 50. $$ WYZ026-211000- Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the mid 30s. Northwest winds around 10 mph early this evening. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs around 70. East winds around 10 mph, becoming south 15 to 20 mph with gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy with lows in the upper 30s. South winds 15 to 20 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of snow showers, rain showers with a slight chance of thunderstorms in the afternoon. Windy with highs in the mid 50s. Southwest winds 20 to 25 mph with gusts up to 40 mph, becoming west 25 to 35 mph with gusts up to 50 mph in the afternoon. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of snow showers. Windy with lows in the upper 20s. West winds 20 to 30 mph with gusts up to 45 mph, diminishing to 15 to 20 mph with gusts up to 35 mph after midnight. .THURSDAY...Mostly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs around 50. Chance of snow 30 percent. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Breezy with lows in the lower 20s. .FRIDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the lower 40s. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy. Cold with lows around 20. .SATURDAY...Partly cloudy with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 20 percent. .SATURDAY NIGHT...Partly cloudy. Lows around 20. .SUNDAY...Partly cloudy with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 20s. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of. Highs in the lower 50s. $$ WYZ010-211000- Northeast Johnson County- Including the city of Buffalo 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. Northwest winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs around 80. South winds around 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 50s. South winds around 10 mph. .WEDNESDAY...Partly cloudy in the morning, then clearing. Windy with highs in the mid 70s. South winds 25 to 35 mph with gusts up to 50 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Breezy with lows in the upper 30s. West winds 20 to 25 mph with gusts up to 45 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight. Chance of rain 40 percent. .THURSDAY...A slight chance of snow showers. Showers. Little or no snow accumulation. Windy and much cooler with highs in the upper 40s. Chance of precipitation 80 percent. .THURSDAY NIGHT...A chance of rain showers in the evening. Mostly cloudy with a chance of snow showers. Windy with lows in the mid 20s. Chance of precipitation 40 percent. .FRIDAY...Mostly cloudy with a 40 percent chance of snow showers. Breezy with highs around 40. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy with a 20 percent chance of snow showers. Highs in the lower 40s. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of. Lows in the mid 20s. .SUNDAY...Partly cloudy with a 20 percent chance of snow showers. Highs in the upper 40s. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 20s. .MONDAY...Partly cloudy. A slight chance of. Highs in the lower 50s. $$ WYZ011-211000- Southeast Johnson County- Including the city of Kaycee 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. Northwest winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs around 80. Southwest winds 10 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 50s. South winds 10 to 15 mph. .WEDNESDAY...Partly cloudy in the morning, then clearing. Windy with highs in the mid 70s. Southwest winds 20 to 30 mph with gusts up to 45 mph, increasing to 30 to 35 mph with gusts up to 55 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers after midnight. Windy with lows in the upper 30s. Southwest winds 20 to 30 mph with gusts up to 45 mph, becoming west 15 to 20 mph with gusts up to 30 mph after midnight. Chance of rain 30 percent. .THURSDAY...A slight chance of snow showers. Showers likely in the morning, then showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy and much cooler with highs around 50. Chance of precipitation 80 percent. .THURSDAY NIGHT...Mostly cloudy. Rain and snow showers likely in the evening, then a chance of snow showers after midnight. Light snow accumulation possible. Breezy with lows in the mid 20s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy. A chance of snow showers in the morning, then snow showers likely in the afternoon. New little or no snow accumulation. Breezy with highs in the lower 40s. Chance of snow 60 percent. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s. .SATURDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the upper 40s. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 20s. .MONDAY...Partly cloudy with a slight chance of snow showers. A slight chance of rain showers and thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 20 percent. $$ WYZ027-211000- South Lincoln County- Including the cities of Kemmerer and Cokeville 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the upper 30s. West winds around 10 mph early this evening. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs around 70. South winds around 10 mph, increasing to 15 to 20 mph with gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy with lows in the upper 30s. Southwest winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY...Mostly sunny with a chance of rain and snow showers in the morning, then partly cloudy with snow showers, rain showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the lower 50s. Southwest winds 25 to 35 mph with gusts up to 45 mph. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A 30 percent chance of snow showers. Windy with lows in the upper 20s. West winds 20 to 30 mph with gusts up to 45 mph. .THURSDAY...Mostly cloudy. Snow showers likely in the morning, then a chance of snow showers, a slight chance of thunderstorms and rain showers in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 40s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy. A chance of snow showers after midnight. Breezy with lows in the mid 20s. Chance of snow 30 percent. .FRIDAY...Mostly sunny in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the mid 40s. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 20s. .SATURDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of thunderstorms and snow showers in the afternoon. Highs around 50. Chance of snow 20 percent. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 20s. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. .MONDAY...Mostly sunny. A slight chance of thunderstorms, rain and snow showers in the afternoon. Highs in the lower 50s. Chance of precipitation 20 percent. $$ WYZ016-211000- Upper Wind River Basin- Including the city of Dubois 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. West winds 10 to 15 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s. West winds around 10 mph, becoming south with gusts up to 25 mph in the afternoon. .TUESDAY NIGHT...Cloudy in the evening, then becoming partly cloudy. Lows around 40. Southwest winds 10 to 15 mph with gusts up to 25 mph, becoming west after midnight. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with rain showers, snow showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy with highs in the mid 50s. West winds 20 to 25 mph with gusts up to 35 mph, becoming southwest 25 to 35 mph with gusts up to 45 mph in the afternoon. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Rain showers likely in the evening. Snow showers. Little or no snow accumulation. Windy with lows in the lower 30s. West winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation 80 percent. .THURSDAY...Snow showers. Rain showers likely with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs in the upper 40s. Chance of precipitation 90 percent. .THURSDAY NIGHT...Rain showers likely with a slight chance of thunderstorms in the evening. Snow showers. Light snow accumulation. Breezy with lows in the lower 20s. Chance of precipitation 80 percent. .FRIDAY...Snow showers likely in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the mid 30s. Chance of snow 80 percent. .FRIDAY NIGHT...Partly cloudy with snow showers likely in the evening, then mostly cloudy with a chance of snow showers after midnight. New light snow accumulation possible. Cold with lows around 20. Chance of snow 60 percent. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Lows in the lower 20s. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the mid 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy. A chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 30 percent. $$ WYZ001-211000- Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 30s. South winds around 10 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. South winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy. Scattered rain showers in the evening. Lows in the mid 30s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with a chance of snow and rain showers in the morning, then mostly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 40s. Temperature falling into the upper 30s in the afternoon. Southwest winds 15 to 20 mph with gusts up to 40 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. Moderate snow accumulation. Breezy with lows in the mid 20s. Southwest winds 15 to 20 mph with gusts up to 40 mph. Chance of snow near 100 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the mid 30s. Chance of snow 90 percent. .THURSDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers likely after midnight. New moderate snow accumulation. Cold with lows 14 to 20. Chance of snow 80 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs around 30. Chance of snow 80 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Cold with lows 10 to 15. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the lower 30s. .SATURDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Cold with lows 10 to 15. Chance of snow 30 percent. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy with a chance of snow showers in the evening, then mostly clear after midnight. Cold with lows 14 to 20. Chance of snow 30 percent. .MONDAY...Partly cloudy. A chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. $$ WYZ029-211000- Flaming Gorge- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Partly cloudy early this evening, then clearing. Lows in the lower 40s. South winds around 10 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph, increasing to 20 to 25 mph with gusts up to 40 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then clearing. Breezy with lows in the lower 40s. South winds 15 to 25 mph. Gusts up to 40 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers, snow showers with a slight chance of thunderstorms in the afternoon. Windy with highs in the upper 50s. Temperature falling to around 50 in the afternoon. South winds 25 to 30 mph, becoming southwest in the afternoon. Gusts up to 45 mph. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...Partly cloudy and windy. Lows in the lower 30s. West winds 20 to 30 mph with gusts up to 40 mph, diminishing to 15 to 20 mph with gusts up to 30 mph after midnight. .THURSDAY...Mostly cloudy. A chance of snow showers, a slight chance of rain showers and thunderstorms in the afternoon. Windy with highs around 50. Chance of precipitation 30 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of. Breezy with lows around 30. .FRIDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the upper 40s. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows in the mid 20s. .SATURDAY...Partly cloudy. A slight chance of thunderstorms, rain and snow showers in the afternoon. Highs around 50. Chance of precipitation 20 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of snow showers. Lows in the upper 20s. Chance of snow 20 percent. .SUNDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers, rain showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of precipitation 30 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 20s. .MONDAY...Partly cloudy. A chance of snow showers, a slight chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 30 percent. $$ WYZ022-211000- Casper Mountain- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds around 10 mph, becoming southwest after midnight. .TUESDAY...Mostly sunny. Highs in the upper 60s. South winds 10 to 15 mph, becoming southwest in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 40s. South winds 10 to 15 mph. .WEDNESDAY...Partly cloudy and windy. Highs in the mid 60s. Southwest winds 20 to 30 mph with gusts up to 50 mph. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of snow showers after midnight. Windy with lows in the lower 30s. Southwest winds 25 to 35 mph with gusts up to 60 mph. Chance of snow 20 percent. .THURSDAY...Mostly cloudy. A chance of snow showers in the morning, then snow and rain showers likely in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the mid 40s. Chance of precipitation 70 percent. .THURSDAY NIGHT...Rain showers likely in the evening. Snow showers likely. Light snow accumulation possible. Lows in the lower 20s. Chance of precipitation 70 percent. .FRIDAY...Snow showers in the morning, then snow showers likely with a slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the mid 30s. Chance of snow 80 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of snow showers. Cold with lows 15 to 21. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 40 percent. .SATURDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Lows in the lower 20s. .SUNDAY...Mostly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Light snow accumulation possible. Highs around 40. Chance of snow 50 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy with a slight chance of snow showers after midnight. Lows in the mid 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. $$ WYZ002-211000- Absaroka Mountains- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear and breezy. Lows in the mid 30s. West winds 15 to 20 mph with gusts up to 30 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the mid 50s. Southwest winds 15 to 20 mph with gusts up to 35 mph. .TUESDAY NIGHT...Mostly cloudy with scattered rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny with a chance of snow showers with a slight chance of rain showers in the morning, then partly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy with highs in the mid 40s. Temperature falling into the upper 30s in the afternoon. Southwest winds 20 to 25 mph with gusts up to 45 mph, increasing to 25 to 35 mph with gusts up to 60 mph in the afternoon. Chance of precipitation 80 percent. .WEDNESDAY NIGHT...Snow showers. Light snow accumulation. Windy with lows in the mid 20s. West winds 25 to 35 mph with gusts up to 60 mph. Chance of snow 90 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the lower 30s. Chance of snow 90 percent. .THURSDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. New moderate snow accumulation. Breezy, cold with lows 12 to 20. Chance of snow 90 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the mid 20s. Chance of snow 80 percent. .FRIDAY NIGHT...Mostly cloudy with snow showers likely in the evening, then partly cloudy with a chance of snow showers after midnight. New light snow accumulation possible. Cold with lows 5 to 15 above. Chance of snow 60 percent. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 20s. Chance of snow 40 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Cold with lows 10 to 20. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 30s. Chance of snow 40 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Cold with lows 13 to 21. Chance of snow 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 30s. Chance of snow 30 percent. $$ WYZ007-211000- Owl Creek and Bridger Mountains- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the mid 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny and breezy. Highs in the lower 70s. South winds 15 to 20 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy with lows in the upper 40s. South winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY...Mostly sunny. A chance of rain and snow showers in the afternoon. Very windy with highs in the lower 60s. Southwest winds 30 to 40 mph. Gusts up to 50 mph, increasing to 60 mph in the afternoon. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain and snow showers. Windy with lows in the upper 30s. West winds 25 to 35 mph, diminishing to 15 to 25 mph after midnight. Gusts up to 50 mph. Chance of precipitation 30 percent. .THURSDAY...Rain showers likely. Snow showers likely in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Breezy with highs in the mid 40s. Chance of precipitation 80 percent. .THURSDAY NIGHT...Snow and rain showers in the evening, then snow showers likely after midnight. Light snow accumulation. Breezy with lows in the mid 20s. Chance of precipitation 80 percent. .FRIDAY...Snow showers likely. A slight chance of thunderstorms in the afternoon. New light snow accumulation possible. Breezy with highs in the mid 30s. Chance of snow 70 percent. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of snow showers. New little or no snow accumulation. Breezy with lows in the lower 20s. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the upper 30s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. .SUNDAY NIGHT...Partly cloudy. A slight chance of snow showers in the evening. Lows in the upper 20s. Chance of snow 20 percent. .MONDAY...Partly cloudy in the morning, then clearing. A slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 40s. Chance of snow 20 percent. $$ WYZ008-211000- Bighorn Mountains West- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds around 10 mph, becoming south with gusts up to 20 mph after midnight. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY NIGHT...Partly cloudy and breezy. Lows in the upper 40s. South winds 15 to 20 mph with gusts up to 35 mph. .WEDNESDAY...Mostly sunny. A chance of rain and snow showers in the afternoon. Windy with highs in the upper 50s. Southwest winds 25 to 35 mph with gusts up to 55 mph. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of rain showers. Snow showers likely with a slight chance of thunderstorms in the evening, then snow showers after midnight. Light snow accumulation. Windy with lows in the lower 30s. West winds 20 to 30 mph with gusts up to 55 mph, diminishing to 15 to 20 mph with gusts up to 35 mph after midnight. Chance of precipitation 80 percent. .THURSDAY...Snow showers. Rain showers with a slight chance of thunderstorms in the afternoon. New light snow accumulation. Windy, cooler with highs in the upper 30s. Chance of precipitation 90 percent. .THURSDAY NIGHT...Snow showers. New light snow accumulation. Breezy, cold with lows 13 to 25. Chance of snow 80 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the lower 30s. Chance of snow 80 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Cold with lows 10 to 22. .SATURDAY...Partly cloudy with a 40 percent chance of snow showers. Highs in the lower 30s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Cold with lows 13 to 25. .SUNDAY...Partly cloudy with a 40 percent chance of snow showers. Highs in the upper 30s. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the lower 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. $$ WYZ009-211000- Bighorn Mountains Southeast- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the lower 40s. West winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY...Partly cloudy in the morning, then clearing. Highs in the upper 60s. West winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY NIGHT...Partly cloudy and breezy. Lows in the upper 40s. Southwest winds 15 to 20 mph with gusts up to 40 mph. .WEDNESDAY...Partly cloudy in the morning, then clearing. A slight chance of. Very windy with highs in the lower 60s. Southwest winds 30 to 40 mph with gusts up to 65 mph. .WEDNESDAY NIGHT...Partly cloudy with a chance of snow and rain showers in the evening, then mostly cloudy with snow showers likely after midnight. Little or no snow accumulation. Very windy with lows in the lower 30s. West winds 30 to 40 mph with gusts up to 65 mph, diminishing to 20 to 30 mph with gusts up to 45 mph after midnight. Chance of precipitation 60 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. Light snow accumulation. Windy, cooler with highs around 40. Chance of snow 90 percent. .THURSDAY NIGHT...Snow showers. New light snow accumulation. Breezy, cold with lows around 20. Chance of snow 80 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the lower 30s. Chance of snow 80 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Breezy, cold with lows 10 to 20. .SATURDAY...Partly cloudy with a 40 percent chance of snow showers. Highs in the lower 30s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Cold with lows 14 to 22. .SUNDAY...Partly cloudy with a 40 percent chance of snow showers. Highs in the mid 30s. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the lower 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 30 percent. $$ WYZ012-211000- Teton and Gros Ventre Mountains- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the mid 30s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. South winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY NIGHT...Mostly cloudy with scattered rain showers with isolated thunderstorms in the evening, then partly cloudy after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .WEDNESDAY...Partly cloudy with snow showers likely with a chance of rain showers in the morning, then mostly cloudy with snow showers with a chance of thunderstorms in the afternoon. Light snow accumulation. Breezy with highs in the lower 40s. Temperature falling into the mid 30s in the afternoon. Southwest winds 15 to 25 mph with gusts up to 45 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. New moderate snow accumulation. Breezy with lows in the mid 20s. Southwest winds 20 to 25 mph with gusts up to 45 mph. Chance of snow near 100 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the mid 30s. Chance of snow near 100 percent. .THURSDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. New moderate snow accumulation. Breezy, cold with lows 16 to 22. Chance of snow 90 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Highs in the upper 20s. Chance of snow 80 percent. .FRIDAY NIGHT...Partly cloudy. Snow showers likely, mainly in the evening. New light snow accumulation possible. Cold with lows 10 to 15. Chance of snow 60 percent. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 30s. Chance of snow 40 percent. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Cold with lows 15 to 20. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 40 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers, mainly in the evening. Cold with lows 16 to 22. Chance of snow 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. $$ WYZ014-211000- Wind River Mountains West- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear early this evening, then becoming partly cloudy. Lows in the mid 30s. West winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy with scattered rain showers in the evening, then partly cloudy after midnight. Breezy with lows in the lower 30s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny with a chance of snow showers in the morning, then mostly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Light snow accumulation. Windy with highs in the lower 40s. Southwest winds 20 to 30 mph with gusts up to 55 mph. Chance of snow 80 percent. .WEDNESDAY NIGHT...Mostly cloudy with snow showers. New light snow accumulation. Windy with lows in the lower 20s. West winds 20 to 30 mph with gusts up to 55 mph. Chance of snow 80 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the mid 30s. Chance of snow 90 percent. .THURSDAY NIGHT...A slight chance of thunderstorms in the evening. Snow showers. New light snow accumulation. Breezy, cold with lows 12 to 22. Chance of snow 80 percent. .FRIDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the upper 20s. Chance of snow 80 percent. .FRIDAY NIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. New light snow accumulation possible. Cold with lows 10 to 15. Chance of snow 60 percent. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 30s. Chance of snow 40 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Cold with lows 10 to 20. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 30s. Chance of snow 40 percent. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Cold with lows 13 to 23. .MONDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. $$ WYZ015-211000- Wind River Mountains East- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Partly cloudy early this evening, then clearing. Breezy with lows in the mid 30s. Southwest winds 15 to 20 mph with gusts up to 30 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the mid 50s. Southwest winds 15 to 20 mph with gusts up to 30 mph. .TUESDAY NIGHT...Partly cloudy and breezy. Lows in the mid 30s. Southwest winds 20 to 25 mph with gusts up to 40 mph. .WEDNESDAY...Mostly sunny with a chance of snow showers in the morning, then partly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Light snow accumulation. Very windy with highs in the lower 40s. Southwest winds 30 to 40 mph with gusts up to 60 mph. Chance of snow 80 percent. .WEDNESDAY NIGHT...Snow showers. New light snow accumulation. Very windy with lows in the mid 20s. West winds 30 to 40 mph with gusts up to 60 mph. Chance of snow 80 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Windy with highs in the mid 30s. Chance of snow 90 percent. .THURSDAY NIGHT...Snow showers with a slight chance of thunderstorms in the evening, then snow showers after midnight. New moderate snow accumulation. Breezy, cold with lows 12 to 22. Chance of snow 80 percent. .FRIDAY...Snow showers in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. New moderate snow accumulation. Breezy with highs in the mid 20s. Chance of snow 80 percent. .FRIDAY NIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. New light snow accumulation possible. Cold with lows 5 to 15 above. Chance of snow 60 percent. .SATURDAY...Partly cloudy. A chance of snow showers in the morning, then snow showers likely with a slight chance of thunderstorms in the afternoon. New light snow accumulation possible. Highs in the upper 20s. Chance of snow 60 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of snow showers. Cold with lows 9 to 21 above. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Light snow accumulation possible. Highs in the lower 30s. Chance of snow 50 percent. .SUNDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Cold with lows 12 to 24. .MONDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 40 percent. $$ WYZ019-211000- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. West winds 10 to 15 mph. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Breezy with highs in the lower 70s. Southwest winds 15 to 20 mph. .TUESDAY NIGHT...Partly cloudy and breezy. Lows in the mid 40s. South winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a chance of rain and snow showers in the afternoon. Windy with highs in the lower 60s. Temperature falling into the mid 50s in the afternoon. Southwest winds 25 to 35 mph with gusts up to 60 mph. Chance of precipitation 30 percent. .WEDNESDAY NIGHT...A slight chance of rain showers in the evening. Partly cloudy with a chance of snow showers. Windy with lows in the lower 30s. West winds 25 to 35 mph with gusts up to 60 mph. Chance of precipitation 30 percent. .THURSDAY...Mostly cloudy. A chance of snow showers in the morning, then snow and rain showers likely in the afternoon. Little or no snow accumulation. Windy with highs in the upper 40s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Rain showers likely in the evening. Snow showers likely. Light snow accumulation possible. Breezy with lows in the lower 20s. Chance of precipitation 70 percent. .FRIDAY...Snow showers likely. New light snow accumulation possible. Breezy with highs in the upper 30s. Chance of snow 70 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of snow showers. Cold with lows 16 to 22. .SATURDAY...Partly cloudy with a 30 percent chance of snow showers. Highs in the lower 40s. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 40 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy with a slight chance of snow showers after midnight. Lows in the mid 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy. A slight chance of snow showers in the morning, then a chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 30 percent. $$ WYZ024-211000- Salt River and Wyoming Ranges- 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows in the upper 30s. Southwest winds around 10 mph, becoming south after midnight. .TUESDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 60s. South winds 10 to 15 mph with gusts up to 30 mph. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 30s. South winds 10 to 15 mph with gusts up to 30 mph. .WEDNESDAY...Mostly sunny with snow showers likely with a chance of rain showers in the morning, then mostly cloudy with snow showers with a slight chance of thunderstorms in the afternoon. Little or no snow accumulation. Windy, cooler with highs in the mid 40s. Southwest winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...A slight chance of thunderstorms in the evening. Snow showers. Light snow accumulation. Windy with lows in the upper 20s. West winds 20 to 30 mph with gusts up to 50 mph. Chance of snow 90 percent. .THURSDAY...Snow showers. A slight chance of thunderstorms in the afternoon. New light snow accumulation. Breezy with highs in the upper 30s. Chance of snow 90 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Snow showers. New light snow accumulation. Breezy with lows in the mid 20s. Chance of snow 80 percent. .FRIDAY...Snow showers likely. A slight chance of thunderstorms in the afternoon. New light snow accumulation possible. Breezy with highs in the mid 30s. Chance of snow 70 percent. .FRIDAY NIGHT...Partly cloudy with a 40 percent chance of snow showers. Cold with lows around 20. .SATURDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 30s. Chance of snow 30 percent. .SATURDAY NIGHT...Partly cloudy with a 30 percent chance of snow showers. Lows in the lower 20s. .SUNDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 40s. Chance of snow 40 percent. .SUNDAY NIGHT...Partly cloudy. A chance of snow showers in the evening. Lows in the lower 20s. Chance of snow 30 percent. .MONDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 40s. Chance of snow 30 percent. $$ WYZ030-211000- East Sweetwater County- Including the city of Wamsutter 817 PM MDT Mon Apr 20 2026 .TONIGHT...Mostly clear. Lows around 40. Southwest winds around 10 mph. .TUESDAY...Mostly sunny and breezy. Highs in the lower 70s. South winds 15 to 20 mph. Gusts up to 35 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Breezy with lows in the lower 40s. South winds 15 to 20 mph. Gusts up to 35 mph in the evening. .WEDNESDAY...Mostly sunny in the morning, then partly cloudy with a slight chance of showers, thunderstorms and snow showers in the afternoon. Windy with highs around 60. Temperature falling into the lower 50s in the afternoon. Southwest winds 25 to 35 mph with gusts up to 50 mph. Chance of precipitation 20 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Windy with lows around 30. West winds 20 to 30 mph. Gusts up to 45 mph in the evening. .THURSDAY...Mostly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Windy with highs around 50. Chance of snow 30 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 30 percent chance of snow showers. Breezy with lows in the mid 20s. .FRIDAY...Partly cloudy with a chance of snow showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the mid 40s. Chance of snow 30 percent. .FRIDAY NIGHT...Partly cloudy and breezy. Lows around 20. .SATURDAY...Partly cloudy with a slight chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 20 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of snow showers. Lows in the mid 20s. .SUNDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of snow showers. A slight chance of thunderstorms in the afternoon. Highs around 50. Chance of snow 30 percent. .SUNDAY NIGHT...Mostly cloudy with a slight chance of snow showers in the evening, then partly cloudy after midnight. Lows in the mid 20s. Chance of snow 20 percent. .MONDAY...Partly cloudy. A chance of snow showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of snow 30 percent. $$