Deep Lake Weather Forecast

    • 22
    • 32

    Increasing Clouds

    • 27
    • 34

    Chance Snow

    • 22
    • 33

    Blizzard

    • 17
    • 27

    Chance Snow

    • 22
    • 32

    Chance Snow

    • 17
    • 32

    Chance Snow

Today 22 Feb Gallatin and Madison County Mountains and Centennial Mountains

Not as cold. Sunny. Highs 28 to 40. South Winds 5 to 15 Mph with Gusts to around 40 Mph.

Tonight 22 Feb Gallatin and Madison County Mountains and Centennial Mountains

Partly cloudy. Patchy blowing snow after midnight. Lows 16 to 26. South Winds 10 to 15 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deep Lake Temperature Statistics

February Temperature

Ennis - Big Sky Airport (28 miles)

  • Lowest 19 February, 2026

    -4 °F

  • Average February

    35.5 °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

    32 °F

  • Average 2021–2026

    44.3 °F

  • Average High 2021–2026

    56.3 °F
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