FPUS65 KTFX 030349 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 948 PM MDT Sat May 2 2026 MTZ301>314-316>318-031200- Central Montana- National Weather Service Great Falls MT 948 PM MDT Sat May 2 2026 .REST OF TONIGHT...Mostly cloudy late in the evening then becoming partly cloudy. Slight chance of thunderstorms late in the evening. Slight chance of rain showers through the night. Lows 40 to 45...35 to 40 in the mountains. .SUNDAY...Sunny. Highs 70 to 75...55 to 65 in the mountains. .SUNDAY NIGHT...Increasing clouds. Lows 40 to 45...30 to 40 in the mountains. .MONDAY...Mostly cloudy. Cooler. Chance of rain and snow showers. Highs 45 to 55. North winds 20 to 25 mph with gusts to 40 mph. .TUESDAY...Partly cloudy. Slight chance of rain and snow showers. Lows around 30. Highs 45 to 55. .WEDNESDAY...Partly cloudy. Lows 30 to 35. Highs 60 to 70. .THURSDAY...Mostly cloudy. Slight chance of rain showers. Lows 40 to 50. Highs 65 to 75. $$ MTZ315-319>330-031200- Southwest Montana- National Weather Service Great Falls MT 948 PM MDT Sat May 2 2026 .REST OF TONIGHT...Mostly cloudy. Lows 35 to 45. .SUNDAY...Sunny. Slight chance of thunderstorms in the afternoon. Highs 65 to 70...55 to 65 in the mountains. .SUNDAY NIGHT...Partly cloudy. Lows 35 to 45...30 to 40 in the mountains. .MONDAY...Mostly cloudy. Chance of rain and snow showers. Highs 50 to 60. .TUESDAY...Partly cloudy. Slight chance of snow showers. Lows 25 to 30. Highs 40 to 50. .WEDNESDAY...Mostly clear. Lows 25 to 30. Highs 55 to 65. .THURSDAY...Partly cloudy. Slight chance of rain showers. Lows 35 to 45. Highs 60 to 70. $$