FPUS65 KTFX 312200 SFPMT State Forecast For Montana National Weather Service Great Falls MT 400 PM MDT Tue Mar 31 2026 MTZ001>007-043-011000- West of the Continental Divide- National Weather Service Missoula MT 400 PM MDT Tue Mar 31 2026 ...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT for Bitterroot/Sapphire Mountains...Butte/Blackfoot Region...Potomac/Seeley Lake Region... .TONIGHT...Mostly cloudy with a slight chance of rain. Lows in the upper 20s to mid 30s. .WEDNESDAY...Mostly cloudy with a chance of rain. Highs in the 50s. .WEDNESDAY NIGHT...Rain likely. Lows in the upper 20s to mid 30s. .THURSDAY...Rain and snow likely. Highs in the 40s. .FRIDAY...Mostly cloudy with a chance of snow. Lows in the mid 20s to lower 30s. Highs in the mid 40s to lower 50s. .SATURDAY...Mostly clear. Lows in the 20s to lower 30s. Highs in the 50s to lower 60s. .SUNDAY...Partly cloudy. Lows in the upper 20s to mid 30s. Highs in the upper 50s to mid 60s. $$ MTZ301>314-316>318-011000- Central Montana- National Weather Service Great Falls MT 400 PM MDT Tue Mar 31 2026 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT FOR Southern Rocky Mountain Front... ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY MORNING FOR Cascade County below 5000ft...Judith Basin County and Judith Gap...Fergus County below 4500ft...Little Belt and Highwood Mountains...Snowy and Judith Mountains... .TONIGHT...Mostly cloudy. Chance of snow in the evening. Lows 20 to 30. .WEDNESDAY...Partly cloudy. Chance of snow in the afternoon. Highs 50 to 55...40 to 50 in the mountains. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain and snow. Lows 30 to 35. .THURSDAY...Cloudy. Snow and rain. Highs 35 to 45. .FRIDAY...Mostly cloudy. Chance of snow. Lows 25 to 30. Highs 40 to 45. .SATURDAY...Mostly clear. Lows 25 to 30. Highs 50 to 60. .SUNDAY...Partly cloudy. Lows 30 to 35. Highs 55 to 65. $$ MTZ315-319>330-011000- Southwest Montana- National Weather Service Great Falls MT 400 PM MDT Tue Mar 31 2026 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT FOR Upper Blackfoot and MacDonald Pass...Elkhorn and Boulder Mountains...Northwest Beaverhead County... ...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY MORNING FOR Big Belt, Bridger and Castle Mountains...Gallatin and Madison County Mountains and Centennial Mountains... .TONIGHT...Mostly cloudy. Chance of rain and snow. Lows 25 to 35. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Highs 50 to 55...40 to 50 in the mountains. .WEDNESDAY NIGHT...Cloudy. Rain and snow. Lows 25 to 35. .THURSDAY...Cloudy, snow. Highs 35 to 45. .FRIDAY...Mostly cloudy. Chance of snow. Lows 20 to 30. Highs 35 to 45. .SATURDAY...Mostly clear. Lows 20 to 25. Highs 45 to 55. .SUNDAY...Partly cloudy. Lows 25 to 30. Highs 50 to 60. $$ MTZ016>027-059>062-011000- Northeast Montana- National Weather Service Glasgow MT 400 PM MDT Tue Mar 31 2026 .REST OF TODAY...Mostly cloudy. Highs in the mid 30s to lower 40s. .TONIGHT...Mostly cloudy with a slight chance of light snow. Lows in the mid to upper 20s. .WEDNESDAY...Mostly cloudy. A slight chance of light snow in the morning, then a slight chance of light rain and snow in the afternoon and evening. Highs in the 40s. .THURSDAY...Cloudy with a chance of light rain and a slight chance of light snow. Highs in the upper 30s to mid 40s. Lows in the mid 20s to lower 30s. .FRIDAY...Cloudy with a chance of light snow. Highs in the mid 30s to lower 40s. Lows in the mid to upper 20s. .SATURDAY...Partly cloudy. Highs in the upper 40s to mid 50s. Lows in the lower to mid 20s. $$ MTZ028>042-056>058-063>068-011000- South Central and Southeast Montana- National Weather Service Billings MT 400 PM MDT Tue Mar 31 2026 ...Winter Weather Advisory in effect until Midnight MDT tonight for portions of South Central Montana... .TONIGHT...Mostly cloudy. Patchy dense fog. Chance of snow showers and slight chance of rain showers. Lows in the mid 20s to lower 30s. .WEDNESDAY...Mostly cloudy. Patchy dense fog west...and chance of snow showers and showers west...and chance of snow showers and slight chance of showers east. Highs in the mid 40s to the mid 50s. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of snow showers. Lows in the mid 20s to upper 30s. .THURSDAY...Mostly cloudy. West, patchy blowing snow, Slight chance of thunderstorms, Showers, snow showers and slight chance of thunderstorms. East, chance of showers and slight chance of snow showers. Highs in the mid 40s to the mid 50s. .THURSDAY NIGHT...Patchy blowing snow. Snow showers and rain showers. Lows in the mid 20s to lower 30s. .FRIDAY...Patchy blowing snow. Snow showers. Highs in the mid 30s to the mid 40s. .FRIDAY NIGHT...Mostly cloudy. Slight chance of snow showers. Lows in the lower 20s to around 30. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Lows in the mid 20s to the mid 30s. Highs from around 60 west to the mid 40s east. .SUNDAY...Mostly sunny. Highs in the upper 50s to the upper 60s. $$