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Thompson Reservoir, MT Weather Forecast
Thompson Reservoir, MT Weather Forecast Date: 336 PM MDT Tue Aug 25 2026
The area/counties/county of: Gallatin And Madison County Mountains And Centennial Mountains, including the cities of: Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass.or toggle through each period.
Tonight... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms early in the evening, then slight chance of rain showers late in the evening. Lows 47 to 55. South winds up to 10 mph. Chance of precipitation 40%.
Wednesday... Mostly sunny. A 20% chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds up to 10 mph.
Wednesday Night... Mostly cloudy. A 20% chance of thunderstorms in the evening. Lows 47 to 55. South winds up to 10 mph.
Thursday... Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 70 to 80. South winds up to 15 mph. Chance of precipitation 50%.
Thursday Night... Mostly cloudy. Chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Lows 47 to 55. South winds 5 to 15 mph. Chance of precipitation 50%.
Friday... Partly sunny. A 50% chance of thunderstorms in the afternoon. Highs 66 to 76.
Friday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain showers after midnight. Lows 45 to 51. Chance of precipitation 50%.
Saturday... Partly sunny. Chance of rain showers in the morning, then chance of thunderstorms in the afternoon. Highs 60 to 70. Chance of precipitation 50%.
Saturday Night... Partly cloudy. A 20% chance of thunderstorms. Lows 39 to 45. Highs 59 to 69.
Sunday... Partly cloudy. A 20% chance of thunderstorms. Lows 39 to 45. Highs 59 to 69.
Sunday Night... Partly cloudy. Lows 39 to 45.
Monday... Sunny in the morning, then partly sunny with a 40% chance of rain showers in the afternoon. Highs 61 to 71.
Monday Night... Partly cloudy with a 20% chance of rain showers. Lows 40 to 48.
POP = Probability of Precipitation
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