FPUS65 KTFX 201003 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 403 AM MDT Fri Mar 20 2026 MTZ301>314-316>318-210015- Central Montana- National Weather Service Great Falls MT 403 AM MDT Fri Mar 20 2026 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY FOR East Glacier Park Region...Northern High Plains...Eastern Glacier, Western Toole, and Central Pondera...Southern Rocky Mountain Front...Southern High Plains... ...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON MDT SATURDAY FOR Cascade County below 5000ft...Judith Basin County and Judith Gap...Fergus County below 4500ft...Little Belt and Highwood Mountains... .TODAY...Mostly cloudy in the morning then becoming partly cloudy. Patchy blowing dust in the afternoon. Highs 70 to 80... 55 to 65 in the mountains. Southwest winds 20 to 25 mph with gusts to 50 mph shifting to the west 25 to 35 mph with gusts to 60 mph in the afternoon. .TONIGHT...Partly cloudy. Lows 45 to 55...40 to 50 in the mountains. West winds 20 to 30 mph. Gusts up to 60 mph decreasing to 50 mph after midnight. .SATURDAY...Mostly cloudy then becoming partly cloudy. Chance of rain through the day. Slight chance of snow in the afternoon and evening. Highs 50 to 60...45 to 55 in the mountains. Northwest winds 20 to 30 mph with gusts to 40 mph. .SUNDAY...Mostly clear. Lows 25 to 30. Highs 45 to 55. .MONDAY...Mostly cloudy. Lows 25 to 30. Highs 50 to 60. .TUESDAY...Mostly cloudy. Slight chance of rain. Lows 25 to 35. Highs 50 to 60. $$ MTZ315-319>330-210015- Southwest Montana- National Weather Service Great Falls MT 403 AM MDT Fri Mar 20 2026 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY FOR Upper Blackfoot and MacDonald Pass... ...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON MDT SATURDAY FOR Big Belt, Bridger and Castle Mountains... .TODAY...Sunny. Highs 70 to 80...55 to 65 in the mountains. Southwest winds 20 to 30 mph. Gusts up to 40 mph increasing to 50 mph in the afternoon. .TONIGHT...Partly cloudy. Lows 40 to 50. Southwest winds 20 to 25 mph with gusts to 45 mph in the evening. .SATURDAY...Increasing clouds. Chance of rain in the afternoon and evening. Highs 60 to 70...50 to 60 in the mountains. West winds 20 to 30 mph with gusts to 50 mph in the afternoon and evening. .SUNDAY...Mostly clear. Lows 25 to 30. Highs 45 to 55. .MONDAY...Mostly cloudy. Lows 30 to 35. Highs 50 to 60. .TUESDAY...Mostly cloudy. Slight chance of rain. Lows 30 to 35. Highs 55 to 65. $$