Area Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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591 FPUS65 KTFX 152138 AFPTFX Central and Southwest Montana Area Forecast National Weather Service Great Falls MT 338 PM MDT Sat Aug 15 2026 MTZ301>314-316>318-161200- Central Montana- National Weather Service Great Falls MT 338 PM MDT Sat Aug 15 2026 .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of rain showers in the evening. Slight chance of rain showers after midnight. Patchy fog after midnight. Lows 45 to 55. .SUNDAY...Increasing clouds. Patchy fog in the morning. Patchy smoke in the afternoon. Slight chance of thunderstorms in the afternoon. Highs 75 to 85...65 to 75 in the mountains. .SUNDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Patchy smoke in the evening. Chance of rain showers and slight chance of thunderstorms through the night. Lows 45 to 55. .MONDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs 70 to 80. .TUESDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows 50 to 55. Highs 70 to 80. .WEDNESDAY...Mostly clear. Lows 45 to 55. Highs 75 to 85. .THURSDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. $$ MTZ315-319>330-161200- Southwest Montana- National Weather Service Great Falls MT 338 PM MDT Sat Aug 15 2026 .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of showers and thunderstorms in the evening, then slight chance of rain showers after midnight. Patchy fog after midnight. Lows 40 to 50. .SUNDAY...Mostly cloudy. Patchy fog in the morning. Slight chance of thunderstorms in the afternoon. Highs 70 to 80...60 to 70 in the mountains. .SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms through the night. Lows 45 to 55. .MONDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Highs 70 to 80. .TUESDAY...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 45 to 55. Highs 65 to 75. .WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 65 to 75. .THURSDAY...Mostly clear. Lows 45 to 55. Highs 70 to 80. $$