Fan Mountain Weather Forecast

    • 26
    • 29

    Snow Likely

    • 25
    • 32

    Snow

    • 31
    • 35

    Snow

    • 29
    • 35

    Chance Snow

    • 24
    • 34

    Mostly Cloudy

    • 23
    • 33

    Mostly Cloudy

Today 8 Dec Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. Patchy blowing snow in the afternoon. A 20 percent chance of snow late in the afternoon. Highs 27 to 37. Southwest Winds 10 to 20 Mph. Gusts up to 40 Mph increasing to 50 Mph in the afternoon.

Tonight 8 Dec Gallatin and Madison County Mountains and Centennial Mountains

Windy, cloudy. Patchy blowing snow in the evening. Slight chance of snow in the Evening, then chance of snow and slight chance of rain after midnight. Visibility one quarter mile or less at Times in the evening. Lows 22 to 32. Southwest Winds 15 to 30 Mph with Gusts to around 75 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fan Mountain Temperature Statistics

December Temperature

Ennis - Big Sky Airport (6.2 miles)

  • Lowest 1 December, 2025

    5 °F

  • Average December

    29.8 °F

  • Highest 5 December, 2025

    41 °F

Climate (2020–Present)

Ennis - Big Sky Airport (6.2 miles)

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  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    43.9 °F

  • Average High 2020–2025

    55.7 °F
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