Deep Lake Weather Forecast

    • 34
    • 59

    Mostly Sunny

    • 43
    • 62

    Mostly Sunny

    • 33
    • 65

    Rain Showers Likely

    • 29
    • 46

    Rain/Snow Likely

    • 30
    • 49

    Chance Rain/Snow

    • 22
    • 44

    Chance Snow

    • 23
    • 37

    Slight Chance Snow

Today 11 May Gallatin and Madison County Mountains and Centennial Mountains

Sunny with a 20 percent chance of Thunderstorms. Highs 62 to 74. West Winds 10 to 20 Mph with Gusts to around 40 Mph.

Tonight 11 May Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 36 to 42. North Winds up to 10 Mph. Gusts up to 35 Mph decreasing to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deep Lake Temperature Statistics

May Temperature

Ennis - Big Sky Airport (28 miles)

  • Lowest 6 May, 2026

    19.4 °F

  • Average May

    48.5 °F

  • Highest 2 May, 2026

    69.8 °F

Climate (2021–Present)

Ennis - Big Sky Airport (28 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    56.5 °F
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