FPUS65 KTFX 221854 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1253 PM MDT Sun Mar 22 2026 MTZ301>314-316>318-230000- Central Montana- National Weather Service Great Falls MT 1253 PM MDT Sun Mar 22 2026 .REST OF TODAY...Sunny. Highs 45 to 55...35 to 45 in the mountains. West winds around 20 mph. .TONIGHT...Increasing clouds. Lows 25 to 35. .MONDAY...Mostly cloudy then becoming partly cloudy in the afternoon then becoming mostly cloudy. Highs 50 to 60...45 to 55 in the mountains. .TUESDAY...Mostly cloudy. Chance of rain and snow. Lows 30 to 40. Highs 45 to 55. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Lows 35 to 45. Highs 55 to 65. .THURSDAY...Partly cloudy. Colder. Slight chance of snow. Lows 20 to 25. Highs 35 to 45. $$ MTZ315-319>330-230000- Southwest Montana- National Weather Service Great Falls MT 1253 PM MDT Sun Mar 22 2026 .REST OF TODAY...Sunny. Highs 50 to 60...40 to 50 in the mountains. .TONIGHT...Increasing clouds. Lows 30 to 35. .MONDAY...Mostly cloudy then becoming sunny in the afternoon then becoming mostly cloudy. Highs 55 to 65...45 to 55 in the mountains. .TUESDAY...Mostly cloudy. Slight chance of rain. Lows 35 to 40. Highs 50 to 60. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Lows 40 to 45. Highs 55 to 65. .THURSDAY...Partly cloudy. Cooler. Chance of snow. Lows 25 to 30. Highs 40 to 50. $$