FPUS65 KTFX 211854 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1253 PM MDT Sat Mar 21 2026 MTZ301>314-316>318-220000- Central Montana- National Weather Service Great Falls MT 1253 PM MDT Sat Mar 21 2026 .REST OF TODAY...Rain and snow likely. Highs 45 to 55...40 to 50 in the mountains. .TONIGHT...Partly cloudy. Lows 25 to 35...20 to 30 in the mountains. .SUNDAY...Sunny then becoming partly cloudy. Highs 45 to 55... 35 to 45 in the mountains. West winds 20 to 25 mph with gusts to 35 mph in the afternoon. .MONDAY...Mostly cloudy. Lows 25 to 30. Highs 50 to 60. .TUESDAY...Mostly cloudy. Slight chance of rain and snow. Lows 30 to 35. Highs 50 to 60. .WEDNESDAY...Partly cloudy. Chance of rain and snow. Lows 35 to 40. Highs 50 to 60. $$ MTZ315-319>330-220000- Southwest Montana- National Weather Service Great Falls MT 1253 PM MDT Sat Mar 21 2026 .REST OF TODAY...Mostly cloudy. Slight chance of rain. Highs 60 to 70...50 to 60 in the mountains. West winds 20 to 30 mph with gusts to 45 mph. .TONIGHT...Mostly clear. Lows 25 to 35...20 to 30 in the mountains. Northwest winds around 20 mph with gusts to 40 mph in the evening. .SUNDAY...Sunny then becoming partly cloudy. Highs 50 to 60... 40 to 50 in the mountains. .MONDAY...Mostly cloudy. Lows 30 to 35. Highs 50 to 60. .TUESDAY...Mostly cloudy. Slight chance of rain. Lows 35 to 40. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Chance of rain and snow. Lows 35 to 45. Highs 50 to 60. $$