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Fallon, MT Weather Forecast
Fallon, MT Weather Forecast Date: 206 PM MDT Sun Sep 06 2026
The area/counties/county of: Prairie, including the city of Terry.or toggle through each period.
Rest of Today... Sunny. Near steady temperature in the lower 90s. East wind around 10 mph.
Tonight... Mostly cloudy. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the mid 60s. Northeast wind around 10 mph, becoming east after midnight. Chance of precipitation 40%.
Labor Day... Partly sunny with a chance of showers in the morning, then sunny with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest wind 10 to 15 mph, becoming west 15 to 20 mph in the afternoon. Chance of rain 30%.
Monday Night... Mostly clear. Lows in the lower 50s. West wind 10 to 15 mph.
Tuesday... Sunny, breezy with highs in the mid 70s. West wind 15 to 20 mph, increasing to around 25 mph in the afternoon. Gusts up to 40 mph.
Tuesday Night... Partly cloudy and breezy. Lows in the upper 40s.
Wednesday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s.
Wednesday Night... Mostly clear. Highs in the upper 70s. Lows in the upper 40s.
Thursday... Mostly clear. Highs in the mid 80s. Lows around 50.
Thursday Night... Mostly clear. Highs in the mid 80s. Lows around 50.
Friday... Mostly sunny. Highs in the mid 70s.
Friday Night... A chance of showers. Lows in the mid 40s.
POP = Probability of Precipitation
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