Big Sky Resort Weather Forecast

    • 15
    • 29

    Chance Snow

    • 18
    • 28

    Mostly Cloudy

    • 24
    • 31

    Mostly Cloudy

    • 23
    • 36

    Partly Sunny

    • 26
    • 39

    Mostly Cloudy

    • 18
    • 33

    Slight Chance Snow

    • 17
    • 29

    Partly Sunny

Today 28 Jan Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. Slight chance of snow early in the afternoon. Chance of snow late in the afternoon. Highs 24 to 34. Southwest Winds 5 to 10 Mph with Gusts to around 30 Mph. Chance of snow 50 percent.

Tonight 28 Jan Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy in the evening then becoming partly cloudy. Lows 10 to 20. West Winds 5 to 10 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sky Resort Temperature Statistics

January Temperature

Ennis - Big Sky Airport (11.8 miles)

  • Lowest 23 January, 2026

    -5.8 °F

  • Average January

    28.9 °F

  • Highest 13 January, 2026

    53.6 °F

Climate (2021–Present)

Ennis - Big Sky Airport (11.8 miles)

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  • Average Low 2021–2026

    31.7 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    56 °F
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