Blair Lake Weather Forecast

    • 53
    • 71

    Rain Showers Likely

    • 49
    • 69

    Chance Thunderstorms

    • 51
    • 70

    Chance Thunderstorms

    • 51
    • 69

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 48
    • 68

    Partly Sunny

Today 22 Aug Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. Slight chance of Thunderstorms in the Morning, then chance of Thunderstorms in the afternoon. Highs 70 to 80. South Winds 5 to 15 Mph. Chance of Thunderstorms 50 percent.

Tonight 22 Aug Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy with a 50 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 48 to 56. South Winds up to 10 Mph.

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Blair Lake Temperature Statistics

August Temperature

West Yellowstone (23.6 miles)

  • Lowest 4 August, 2026

    30.2 °F

  • Average August

    59.7 °F

  • Highest 1 August, 2026

    91.4 °F

Climate (2021–2026)

West Yellowstone (23.6 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    66 °F
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