FPUS65 KTFX 221254 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 653 AM MDT Sun Mar 22 2026 MTZ301>314-316>318-230000- Central Montana- National Weather Service Great Falls MT 653 AM MDT Sun Mar 22 2026 .REST OF TODAY...Sunny. Patchy fog in the morning. Highs 50 to 55...40 to 50 in the mountains. West winds 20 to 25 mph in the afternoon. Gusts up to 35 mph. .TONIGHT...Increasing clouds. Lows 25 to 30. .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 35. Highs 50 to 60. .WEDNESDAY...Mostly cloudy. Slight chance of rain and snow. Lows 35 to 45. Highs 55 to 65. .THURSDAY...Partly cloudy. Colder. Slight chance of snow. Lows 20 to 30. Highs 35 to 45. $$ MTZ315-319>330-230000- Southwest Montana- National Weather Service Great Falls MT 653 AM MDT Sun Mar 22 2026 .REST OF TODAY...Sunny. Highs 50 to 60...45 to 55 in the mountains. .TONIGHT...Increasing clouds. Lows 30 to 35. .MONDAY...Mostly cloudy then becoming partly cloudy in the afternoon then becoming mostly cloudy. Highs 60 to 70...45 to 55 in the mountains. .TUESDAY...Mostly cloudy. Chance of rain. Lows 35 to 40. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Slight chance of rain and snow. Lows 40 to 45. Highs 55 to 65. .THURSDAY...Partly cloudy. Cooler. Slight chance of snow. Lows 25 to 35. Highs 40 to 50. $$