FPUS65 KTFX 192138 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 338 PM MDT Thu Mar 19 2026 MTZ301>314-316>318-201200- Central Montana- National Weather Service Great Falls MT 338 PM MDT Thu Mar 19 2026 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR East Glacier Park Region...Northern High Plains...Eastern Glacier, Western Toole, and Central Pondera...Southern High Plains... ...HIGH WIND WARNING IN EFFECT FROM 6 AM FRIDAY TO NOON MDT SATURDAY FOR Southern Rocky Mountain Front... ...HIGH WIND WARNING IN EFFECT FROM 9 AM FRIDAY TO NOON MDT SATURDAY FOR Cascade County below 5000ft...Judith Basin County and Judith Gap...Fergus County below 4500ft...Little Belt and Highwood Mountains... .TONIGHT...Partly cloudy. Lows 45 to 50. West winds 20 to 30 mph with gusts to 50 mph. .FRIDAY...Mostly cloudy in the morning then becoming partly cloudy. Highs 65 to 75...55 to 65 in the mountains. Southwest winds 20 to 25 mph shifting to the west 25 to 35 mph in the afternoon. Gusts up to 55 mph. .FRIDAY NIGHT...Partly cloudy. Lows 45 to 50...35 to 45 in the mountains. West winds 20 to 30 mph with gusts to 55 mph. .SATURDAY...Mostly cloudy. Chance of rain and snow. Highs 55 to 65. West winds 20 to 25 mph with gusts to 40 mph. .SUNDAY...Partly cloudy. 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 30 to 35. Highs 50 to 60. $$ MTZ315-319>330-201200- Southwest Montana- National Weather Service Great Falls MT 338 PM MDT Thu Mar 19 2026 ...HIGH WIND WARNING IN EFFECT FROM 6 AM FRIDAY TO NOON MDT SATURDAY FOR Upper Blackfoot and MacDonald Pass... ...HIGH WIND WARNING IN EFFECT FROM 9 AM FRIDAY TO NOON MDT SATURDAY FOR Big Belt, Bridger and Castle Mountains... .TONIGHT...Partly cloudy. Lows 35 to 45. Gusts up to 45 mph in the evening. .FRIDAY...Sunny. Highs 65 to 75...55 to 65 in the mountains. Southwest winds 20 to 30 mph in the afternoon. Gusts up to 50 mph. .FRIDAY NIGHT...Partly cloudy. Lows 40 to 50...35 to 45 in the mountains. Southwest winds 20 to 25 mph with gusts to 45 mph in the evening. .SATURDAY...Mostly cloudy. Chance of rain. Highs 55 to 65. West winds around 20 mph with gusts to 40 mph. .SUNDAY...Mostly clear. Lows 25 to 30. Highs 45 to 55. .MONDAY...Mostly cloudy. Lows 30 to 35. Highs 50 to 60. .TUESDAY...Mostly cloudy. Lows 30 to 35. Highs 50 to 60. $$