FPUS65 KTFX 210200 SFPMT State Forecast For Montana National Weather Service Great Falls MT 800 PM MDT Fri Mar 20 2026 MTZ001>007-043-211000- West of the Continental Divide- National Weather Service Missoula MT 800 PM MDT Fri Mar 20 2026 .TONIGHT...Mostly cloudy with areas of rain. Lows in the upper 30s to mid 40s. .SATURDAY...Mostly cloudy with a chance of rain. Highs in the 50s. .SATURDAY NIGHT...Mostly clear. Lows in the upper 20s. .SUNDAY...Mostly sunny in the morning then becoming partly cloudy. Highs in the upper 40s to mid 50s. .MONDAY...Mostly cloudy. Lows in the mid 20s to lower 30s. Highs in the 50s to lower 60s. .TUESDAY...Mostly cloudy with a chance of rain. Lows in the upper 20s to mid 30s. Highs in the mid 50s to lower 60s. .WEDNESDAY...Mostly cloudy with a chance of rain and snow. Lows in the mid 30s to lower 40s. Highs in the mid 50s to lower 60s. $$ MTZ301>314-316>318-211000- Central Montana- National Weather Service Great Falls MT 800 PM MDT Fri Mar 20 2026 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 6 AM MDT SATURDAY FOR East Glacier Park Region...Northern High Plains...Eastern Glacier, Western Toole, and Central Pondera...Southern Rocky Mountain Front...Southern High Plains...Cascade County below 5000ft...Judith Basin County and Judith Gap... .REST OF TONIGHT...Partly cloudy. Slight chance of rain after midnight. Lows 45 to 50...35 to 45 in the mountains. West winds 20 to 30 mph. Gusts up to 60 mph decreasing to 50 mph after midnight. .SATURDAY...Mostly cloudy. Chance of rain through the day. Slight chance of snow in the afternoon. Highs 50 to 60...40 to 50 in the mountains. Northwest winds 20 to 25 mph with gusts to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Colder. Slight chance of rain and snow. Lows 25 to 30. .SUNDAY...Mostly clear. Highs 45 to 55. West winds around 20 mph with gusts to 40 mph. .MONDAY...Mostly cloudy. Lows 25 to 30. Highs 50 to 60. .TUESDAY...Mostly cloudy. Lows 30 to 35. Highs 50 to 60. .WEDNESDAY...Mostly cloudy. Lows 40 to 45. Highs 55 to 65. $$ MTZ315-319>330-211000- Southwest Montana- National Weather Service Great Falls MT 800 PM MDT Fri Mar 20 2026 .REST OF TONIGHT...Partly cloudy. Lows 40 to 50...35 to 45 in the mountains. Gusts up to 35 mph in the evening. .SATURDAY...Increasing clouds. Chance of rain through the day. Highs 60 to 70...50 to 60 in the mountains. West winds 20 to 30 mph with gusts to 50 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Colder. Slight chance of rain and snow. Lows 25 to 30. Gusts up to 40 mph in the evening. .SUNDAY...Mostly clear. Highs 45 to 55. .MONDAY...Mostly cloudy. Lows 25 to 35. Highs 50 to 60. .TUESDAY...Mostly cloudy. Lows 30 to 40. Highs 55 to 65. .WEDNESDAY...Partly cloudy. Slight chance of rain. Lows 40 to 45. Highs 60 to 70. $$ MTZ016>027-059>062-211000- Northeast Montana- National Weather Service Glasgow MT 800 PM MDT Fri Mar 20 2026 .TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .SATURDAY...Cloudy. A slight chance of light rain in the afternoon. Highs in the upper 50s to mid 60s. .SATURDAY NIGHT...Mostly cloudy. A slight chance of light rain in the evening, then a slight chance of light snow after midnight. Lows near 30. .SUNDAY...Mostly cloudy in the morning then clearing. A slight chance of light snow in the morning. Highs near 50. .MONDAY...Mostly cloudy. Highs in the 50s. Lows near 30. .TUESDAY...Mostly cloudy. Highs in the lower to mid 50s. Lows near 30. .WEDNESDAY...Mostly cloudy. Highs in the 60s. Lows in the mid 30s to lower 40s. $$ MTZ028>042-056>058-063>068-211000- South Central and Southeast Montana- National Weather Service Billings MT 800 PM MDT Fri Mar 20 2026 .TONIGHT...Partly cloudy. Lows in the lower 40s to the lower 50s. .SATURDAY...Mostly sunny. Highs in the mid 60s to upper 70s. .SATURDAY NIGHT...Mostly cloudy. Chance of rain showers. Lows in the lower 30s to around 40. .SUNDAY...Sunny. Highs in the lower 50s to the lower 60s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 20s to the upper 30s. .MONDAY THROUGH TUESDAY...Mostly cloudy. Lows in the mid 30s to lower 40s. Highs in the lower 60s to the lower 70s. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Lows in the upper 30s to lower 50s. Highs in the lower 70s to around 80. $$