Deep Lake Weather Forecast

    • 30
    • 46

    Mostly Sunny

    • 28
    • 44

    Partly Sunny

    • 27
    • 39

    Partly Sunny

    • 27
    • 38

    Snow Likely

    • 15
    • 30

    Snow Likely

    • 15
    • 26

    Chance Snow

Today 5 Feb Gallatin and Madison County Mountains and Centennial Mountains

Not as cool. Sunny. Highs 44 to 54. Southwest Winds up to 10 Mph.

Tonight 5 Feb Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 25 to 33. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deep Lake Temperature Statistics

February Temperature

Ennis - Big Sky Airport (28 miles)

  • Lowest 2 February, 2026

    26.6 °F

  • Average February

    39.8 °F

  • Highest 1 February, 2026

    51.8 °F

Climate (2021–Present)

Ennis - Big Sky Airport (28 miles)

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  • Average Low 2021–2026

    31.8 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    56 °F
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