FPUS55 KBOU 240005 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 605 PM MDT Sat May 23 2026 COZ038>040-241200- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows 45 to 51. .SUNDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs near 80. Chance of precipitation 10 percent. .SUNDAY NIGHT...Mostly cloudy in the evening then clearing. Lows 48 to 54. .MEMORIAL DAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower to mid 80s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower to mid 50s. .TUESDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs near 80. .TUESDAY NIGHT...Showers likely and chance of thunderstorms. Lows in the lower to mid 50s. Chance of rain 60 percent. .WEDNESDAY...Showers likely and chance of thunderstorms. Highs in the lower to mid 70s. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows near 50. .THURSDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the lower to mid 50s. .FRIDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 74 to 80. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows near 50. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the 70s. $$ COZ041-241200- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 605 PM MDT Sat May 23 2026 .TONIGHT...Mostly clear. Lows in the mid to upper 40s. Southwest winds 10 to 15 mph with gusts up to 20 mph after midnight. .SUNDAY...Mostly sunny. Highs 74 to 80. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows near 50. .MEMORIAL DAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 76 to 82. .MONDAY NIGHT...Partly cloudy. Lows 47 to 53. South winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Windy. Highs 71 to 77. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 45 to 51. .WEDNESDAY...Showers likely and chance of thunderstorms. Highs 65 to 71. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the mid to upper 40s. .THURSDAY AND THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs 70 to 76. Lows near 50. .FRIDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 72 to 78. .FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the mid 40s to lower 50s. .SATURDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the lower to mid 70s. $$ COZ042>045-241200- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- Including Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader 605 PM MDT Sat May 23 2026 .TONIGHT...Mostly clear. Lows in the mid to upper 40s. .SUNDAY...Mostly sunny. Highs in the lower to mid 80s. .SUNDAY NIGHT...Mostly cloudy in the evening then clearing. Lows near 50. .MEMORIAL DAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs in the mid to upper 80s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 50s. South winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Windy. Highs in the lower to mid 80s. .TUESDAY NIGHT...Mostly cloudy with a 30 percent chance of thunderstorms. Lows near 50. .WEDNESDAY...Showers likely and chance of thunderstorms. Highs in the mid to upper 70s. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows near 50. .THURSDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 70s to lower 80s. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows near 50. .FRIDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs near 80. .FRIDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows near 50. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the mid 70s. $$ COZ046-047-241200- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, and Punkin Center 605 PM MDT Sat May 23 2026 .TONIGHT...Mostly clear. Lows in the 40s. South winds 10 to 15 mph with gusts up to 20 mph after midnight. .SUNDAY...Mostly sunny. Highs in the lower to mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .MEMORIAL DAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs in the lower to mid 80s. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows near 50. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Windy. Highs in the mid 70s to lower 80s. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the mid to upper 40s. .WEDNESDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the lower to mid 70s. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of thunderstorms. Lows in the mid to upper 40s. .THURSDAY AND THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. Lows 45 to 51. .FRIDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the mid 70s to lower 80s. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the mid to upper 40s. Highs in the 70s. $$ COZ048>051-241200- Logan County-Washington County-Sedgwick County-Phillips County- Including Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 605 PM MDT Sat May 23 2026 .TONIGHT...Mostly clear. Lows in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph after midnight. .SUNDAY...Mostly sunny. Highs in the mid to upper 80s. Southwest winds 10 to 15 mph in the morning, becoming light. .SUNDAY NIGHT...Partly cloudy. Lows near 50. Southwest winds 10 to 15 mph with gusts up to 20 mph after midnight. .MEMORIAL DAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 80s. .MONDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the lower 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Partly cloudy with a 30 percent chance of thunderstorms. Windy. Highs in the lower to mid 80s. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 50s. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the 70s. Lows in the upper 40s. .THURSDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 50. .FRIDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the mid 70s to lower 80s. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the upper 40s. Highs in the mid 70s. $$ COZ035-241200- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows 38 to 48. .SUNDAY...Partly cloudy in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 66 to 76. Chance of precipitation 30 percent. .SUNDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows 41 to 51. Chance of precipitation 20 percent. .MEMORIAL DAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs 68 to 78. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows 42 to 52. .TUESDAY AND TUESDAY NIGHT...Showers likely and chance of thunderstorms. Highs 66 to 76. Lows 42 to 52. Chance of rain 70 percent. .WEDNESDAY...Showers and chance of thunderstorms. Highs 58 to 68. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Lows 42 to 52. Highs 63 to 71. .THURSDAY NIGHT...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 43 to 53. Chance of rain 30 percent. .FRIDAY...Showers likely and chance of thunderstorms. Highs 64 to 72. Chance of rain 60 percent. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Lows 41 to 51. Highs 63 to 71. $$ COZ036-241200- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows 39 to 47. .SUNDAY...Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 66 to 76. Chance of precipitation 40 percent. .SUNDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 42 to 50. Chance of precipitation 20 percent. .MEMORIAL DAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs 68 to 78. .MONDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows 41 to 51. Chance of rain 30 percent. .TUESDAY...Showers likely and chance of thunderstorms. Highs 64 to 74. Chance of rain 70 percent. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows 41 to 51. .WEDNESDAY...Showers and chance of thunderstorms. Highs 58 to 68. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows 40 to 50. .THURSDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 63 to 73. .THURSDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows 42 to 52. Chance of rain 30 percent. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 65 to 75. Lows 40 to 50. .SATURDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 63 to 73. $$ COZ030-032-241200- Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- Including Gould, North Park, Rand, Spicer, Walden, Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows in the lower to mid 30s. .SUNDAY...Partly cloudy in the morning, then mostly cloudy with a slight chance of thunderstorms in the afternoon. Highs in the mid 60s to lower 70s. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows in the mid to upper 30s. .MEMORIAL DAY...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs in the lower to mid 70s. Chance of rain 40 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows 36 to 42. .TUESDAY...Showers and chance of thunderstorms. Highs in the mid 60s to lower 70s. .TUESDAY NIGHT...Rain showers likely and chance of thunderstorms. Lows 34 to 40. Chance of rain 70 percent. .WEDNESDAY...Rain showers likely and chance of thunderstorms. Highs 62 to 68. Chance of rain 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 34 to 40. Chance of rain 30 percent. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 67 to 73. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 36 to 42. .FRIDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 66 to 72. Chance of rain 40 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 34 to 40. Chance of rain 30 percent. .SATURDAY...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 63 to 69. Chance of rain 40 percent. $$ COZ037-241200- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows in the mid to upper 30s. .SUNDAY...Mostly sunny in the morning, then mostly cloudy with a chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 62 to 68. Chance of rain 30 percent. .SUNDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows near 40. Chance of precipitation 20 percent. .MEMORIAL DAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 62 to 70. .MONDAY NIGHT...Mostly cloudy with a 30 percent chance of showers. Lows near 40. .TUESDAY...Showers and chance of thunderstorms. Highs 58 to 64. .TUESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows near 40. .WEDNESDAY...Showers likely and chance of thunderstorms. Highs 58 to 64. Chance of rain 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of thunderstorms. Lows near 40. .THURSDAY THROUGH FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 63 to 69. Lows 38 to 44. .FRIDAY NIGHT...Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows 36 to 42. Chance of rain 30 percent. .SATURDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 61 to 67. $$ COZ031-033-241200- West Jackson and West Grand Counties Above 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Mt Zirkel, Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows 32 to 38. West winds 10 to 15 mph with gusts up to 25 mph in the evening, becoming light. .SUNDAY...Partly cloudy in the morning, then mostly cloudy with a slight chance of thunderstorms in the afternoon. Highs 56 to 66. West winds 10 to 15 mph in the afternoon. Chance of precipitation 20 percent. .SUNDAY NIGHT...Partly cloudy. Lows 34 to 40. .MEMORIAL DAY...Rain showers likely and chance of thunderstorms. Highs 59 to 69. Chance of rain 60 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 35 to 43. .TUESDAY THROUGH WEDNESDAY...Rain showers and chance of thunderstorms. Highs 54 to 64. Lows 34 to 42. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 34 to 42. Chance of rain 40 percent. .THURSDAY...Partly cloudy with a 50 percent chance of thunderstorms. Highs 57 to 67. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 36 to 44. .FRIDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 56 to 66. .FRIDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 33 to 41. .SATURDAY...Partly cloudy with a chance of thunderstorms and slight chance of snow showers. Highs 54 to 64. Chance of snow 50 percent. $$ COZ034-241200- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Williams Fork Mountains, and Winter Park 605 PM MDT Sat May 23 2026 .TONIGHT...Partly cloudy. Lows 30 to 38. .SUNDAY...Partly cloudy in the morning, then mostly cloudy with a chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 54 to 64. West winds 10 to 15 mph in the afternoon. Chance of rain 30 percent. .SUNDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Lows 33 to 41. Chance of precipitation 10 percent. .MEMORIAL DAY...Rain showers likely and chance of thunderstorms. Highs 56 to 66. Chance of rain 70 percent. .MONDAY NIGHT...Partly cloudy with a 30 percent chance of rain showers. Lows 34 to 42. .TUESDAY...Rain showers, chance of thunderstorms and slight chance of snow showers. Highs 53 to 63. .TUESDAY NIGHT...Rain showers likely, chance of thunderstorms and slight chance of snow showers. Lows 31 to 41. Chance of precipitation 70 percent. .WEDNESDAY...Rain showers with snow showers likely and chance of thunderstorms. Highs 50 to 60. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows 31 to 41. .THURSDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 55 to 65. .THURSDAY NIGHT...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 34 to 44. Chance of rain 30 percent. .FRIDAY...Partly cloudy with a chance of thunderstorms and snow showers. Highs 55 to 65. Chance of snow 40 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of rain showers, slight chance of thunderstorms and snow showers. Lows 31 to 41. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy with a chance of thunderstorms and snow showers. Highs 53 to 63. Chance of snow 50 percent. $$