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Big Sky, MT Weather Forecast
Big Sky, MT Weather Forecast Date: 1232 PM MDT Mon Sep 21 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.
Rest of Today... Warmer, sunny. Highs 57 to 67. Southwest winds up to 10 mph.
Tonight... Mostly clear. Lows 36 to 44. South winds up to 10 mph.
Tuesday... Mostly sunny in the morning then becoming mostly cloudy. Highs 57 to 67. South winds up to 10 mph.
Tuesday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Lows 37 to 45. South winds up to 10 mph. Chance of precipitation 50%.
Wednesday... Sunny. Highs 57 to 67. Southwest winds up to 10 mph with gusts to around 25 mph.
Wednesday Night... Mostly clear. Lows 38 to 49. Highs 60 to 72.
Thursday... Mostly clear. Lows 38 to 49. Highs 60 to 72.
Friday... Mostly clear. Lows 38 to 49. Highs 60 to 72.
Friday Night... Partly cloudy. A 20% chance of rain in the evening. Lows 39 to 45.
Saturday... Mostly sunny. Highs 53 to 63.
Saturday Night... Partly cloudy. A 20% chance of rain. Lows 36 to 42. Highs 54 to 64.
POP = Probability of Precipitation
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