Big Sky Resort Weather Forecast

    • 47
    • 65

    Slight Chance Thunderstorms

    • 51
    • 73

    Mostly Sunny

    • 51
    • 71

    Chance Thunderstorms

    • 50
    • 72

    Chance Thunderstorms

    • 50
    • 74

    Mostly Sunny

    • 50
    • 75

    Mostly Sunny

Today 23 Jul Gallatin and Madison County Mountains and Centennial Mountains

Sunny in the Morning, then partly cloudy with a 20 percent chance of Thunderstorms in the afternoon. Highs 65 to 75. West Winds 5 to 15 Mph.

Tonight 23 Jul Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 45 to 50. North Winds 5 to 10 Mph shifting to the northeast after midnight.

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  • Temperature Real-Time

Big Sky Resort Temperature Statistics

July Temperature

Ennis - Big Sky Airport (11.8 miles)

  • Lowest 5 July, 2025

    42.8 °F

  • Average July

    67.3 °F

  • Highest 14 July, 2025

    93.2 °F

Climate (2020–Present)

Ennis - Big Sky Airport (11.8 miles)

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  • Average Low 2020–2025

    31.3 °F

  • Average 2020–2025

    43.7 °F

  • Average High 2020–2025

    55.7 °F
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