Area Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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278 FPUS65 KTFX 122135 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 334 PM MDT Wed Aug 12 2026 MTZ301>314-316>318-131200- Central Montana- National Weather Service Great Falls MT 334 PM MDT Wed Aug 12 2026 .TONIGHT...Patchy smoke in the evening. Chance of rain showers in the evening. Slight chance of thunderstorms through the night. Rain showers after midnight. Lows 45 to 55...40 to 50 in the mountains. Northeast winds around 20 mph in the evening. .THURSDAY...Cloudy. Rain showers and slight chance of thunderstorms. Highs 55 to 65...50 to 60 in the mountains. .THURSDAY NIGHT...Cloudy. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. Lows 45 to 50. .FRIDAY...Mostly cloudy. Chance of rain showers. Highs 55 to 65. .SATURDAY...Mostly cloudy. Slight chance of rain showers. Lows 45 to 50. Highs 70 to 75. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 45 to 55. Highs 70 to 80. .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows 50 to 55. Highs 75 to 85. $$ MTZ315-319>330-131200- Southwest Montana- National Weather Service Great Falls MT 334 PM MDT Wed Aug 12 2026 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT FOR Big Belt, Bridger and Castle Mountains... ...FLASH FLOOD WATCH IN EFFECT THURSDAY AFTERNOON FOR Northwest Beaverhead County... .TONIGHT...Mostly cloudy. Patchy smoke. Chance of rain showers and slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Lows 45 to 50. .THURSDAY...Mostly cloudy. and patchy smoke through the day. Chance of rain showers through the day. Chance of thunderstorms in the afternoon. Highs 65 to 75...55 to 65 in the mountains. .THURSDAY NIGHT...Cloudy. Patchy smoke in the evening. Chance of thunderstorms in the evening. Rain showers likely through the night. Lows 45 to 50. .FRIDAY...Mostly cloudy. Rain showers and chance of thunderstorms. Highs 60 to 70. .SATURDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 40 to 50. Highs 60 to 70. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 40 to 50. Highs 65 to 75. .MONDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 50. Highs 65 to 75. $$