FPUS65 KTFX 282239 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 338 PM MST Sat Feb 28 2026 MTZ301>314-316>318-011300- Central Montana- National Weather Service Great Falls MT 338 PM MST Sat Feb 28 2026 .TONIGHT...Mostly clear. Lows 5 to 20...15 to 25 in the mountains. .SUNDAY...Sunny. Highs 45 to 55...40 to 50 in the mountains. .SUNDAY NIGHT...Mostly clear. Lows 20 to 30. .MONDAY...Partly cloudy. Highs 45 to 55. .TUESDAY...Mostly cloudy. Lows 25 to 40. Highs 50 to 60. .WEDNESDAY...Rain and snow likely. Lows 25 to 40. Highs 45 to 55. .THURSDAY...Mostly cloudy. Chance of snow. Lows 25 to 30. Highs 40 to 50. $$ MTZ315-319>330-011300- Southwest Montana- National Weather Service Great Falls MT 338 PM MST Sat Feb 28 2026 .TONIGHT...Mostly cloudy. Lows 25 to 35...20 to 30 in the mountains. .SUNDAY...Increasing clouds. Highs 45 to 55...35 to 45 in the mountains. .SUNDAY NIGHT...Mostly cloudy. Chance of snow through the night. Lows 30 to 35...25 to 30 in the mountains. .MONDAY...Mostly cloudy. Chance of snow. Highs 40 to 50. .TUESDAY...Mostly clear. Lows 20 to 35. Highs 45 to 55. .WEDNESDAY...Rain and snow likely. Lows 25 to 35. Highs 40 to 50. .THURSDAY...Mostly cloudy. Chance of snow. Lows 20 to 30. Highs 35 to 45. $$