Fan Mountain Weather Forecast

    • 23
    • 34

    Increasing Clouds

    • 26
    • 41

    Snow

    • 21
    • 30

    Chance Snow

    • 23
    • 33

    Mostly Sunny

    • 24
    • 37

    Chance Snow

    • 23
    • 34

    Chance Snow

    • 24
    • 35

    Chance Snow

Today 25 Oct Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. A 50 percent chance of snow. Lows in the mid 20s. Highs 37 to 45.

Tonight 25 Oct Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear until early morning then becoming mostly cloudy. Areas of dense fog. Lows in the mid 20s. Southeast Winds up to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fan Mountain Temperature Statistics

October Temperature

Ennis - Big Sky Airport (6.2 miles)

  • Lowest 13 October, 2026

    19.4 °F

  • Average October

    49.2 °F

  • Highest 5 October, 2026

    82.4 °F

Climate (2021–2026)

Ennis - Big Sky Airport (6.2 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    56.6 °F
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