Deep Lake Weather Forecast

    • 28
    • 35

    Chance Snow

    • 29
    • 36

    Partly Sunny

    • 28
    • 40

    Partly Sunny

    • 31
    • 38

    Blizzard

    • 23
    • 34

    Chance Snow

    • 18
    • 26

    Chance Snow

Today 12 Dec Gallatin and Madison County Mountains and Centennial Mountains

Cloudy with a 50 percent chance of rain and snow in the Morning, then partly sunny in the afternoon. Highs 32 to 42. Southwest Winds 10 to 15 Mph with Gusts to around 40 Mph.

Tonight 12 Dec Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy with chance of snow with possible Rain, freezing Rain, freezing drizzle and drizzle likely. Snow accumulation up to 5 Inches. Total snow accumulation up to 6 Inches. Snow level 7200 feet. Highs 32 to 42. Lows 22 to 36. Southwest Winds 10 to 20 Mph with Gusts to around 55 Mph. Chance of precipitation 70 percent.

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Deep Lake Temperature Statistics

December Temperature

Ennis - Big Sky Airport (28 miles)

  • Lowest 1 December, 2025

    5 °F

  • Average December

    33.1 °F

  • Highest 9 December, 2025

    51.8 °F

Climate (2020–Present)

Ennis - Big Sky Airport (28 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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