FPUS65 KTFX 290633 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 1233 AM MDT Fri May 29 2026 MTZ301>314-316>318-301200- Central Montana- National Weather Service Great Falls MT 1233 AM MDT Fri May 29 2026 .REST OF TONIGHT...Partly cloudy. Slight chance of rain showers. Slight chance of thunderstorms. Chance of rain showers. Highs 80 to 90...70 to 80 in the mountains. Lows 50 to 60. .SATURDAY...Mostly cloudy. Rain showers likely and chance of thunderstorms. Highs 70 to 80...55 to 65 in the mountains. North winds around 20 mph in the afternoon. .SATURDAY NIGHT...Cloudy, colder. Rain showers and chance of thunderstorms. Lows 45 to 50...35 to 45 in the mountains. Northwest winds 20 to 30 mph. Gusts up to 35 mph after midnight. .SUNDAY...Cloudy. Rain showers and slight chance of thunderstorms. Highs 50 to 60. Northwest winds 20 to 30 mph with gusts to 40 mph. .MONDAY...Rain and slight chance of thunderstorms. Lows 40 to 45. Highs 50 to 60. .TUESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 40 to 45. Highs 55 to 65. .WEDNESDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 40 to 45. Highs 60 to 70. $$ MTZ315-319>330-301200- Southwest Montana- National Weather Service Great Falls MT 1233 AM MDT Fri May 29 2026 .REST OF TONIGHT...Partly cloudy. Slight chance of rain showers. Slight chance of thunderstorms. Chance of rain showers. Highs 75 to 85...65 to 75 in the mountains. Lows 40 to 55. .SATURDAY...Cloudy, cooler. Rain likely in the morning, then rain showers and chance of thunderstorms in the afternoon. Highs 55 to 65...45 to 55 in the mountains. .SATURDAY NIGHT...Cloudy. Rain showers and slight chance of thunderstorms in the evening, then rain and snow after midnight. Lows 35 to 45. .SUNDAY...Cloudy. Rain and snow. Highs 40 to 50. .MONDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 35 to 40. Highs 50 to 60. .TUESDAY...Partly cloudy. Lows 35 to 40. Highs 55 to 65. .WEDNESDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 35 to 40. Highs 60 to 70. $$