Deep Lake Weather Forecast

    • 18
    • 31

    Mostly Sunny

    • 20
    • 30

    Mostly Cloudy

    • 24
    • 31

    Slight Chance Snow

    • 23
    • 33

    Chance Snow

    • 21
    • 34

    Snow Likely

    • 15
    • 27

    Chance Snow

Today 12 Feb Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Highs 31 to 41. Southwest Winds up to 10 Mph with Gusts to around 25 Mph.

Tonight 12 Feb Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 18 to 24. Southwest Winds 5 to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deep Lake Temperature Statistics

February Temperature

Ennis - Big Sky Airport (28 miles)

  • Lowest 9 February, 2026

    19.4 °F

  • Average February

    40.9 °F

  • Highest 5 February, 2026

    64.4 °F

Climate (2021–Present)

Ennis - Big Sky Airport (28 miles)

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  • Average Low 2021–2026

    31.9 °F

  • Average 2021–2026

    44.2 °F

  • Average High 2021–2026

    56.1 °F
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