Crystal Lake Weather Forecast

    • 31
    • 41

    Partly Sunny

    • 32
    • 42

    Rain/Snow Likely

    • 30
    • 43

    Chance Rain/Snow

    • 32
    • 46

    Mostly Sunny

    • 32
    • 46

    Mostly Sunny

Today 26 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly sunny. Highs 49 to 59. Southwest Winds 5 to 15 Mph with Gusts to around 35 Mph.

Tonight 26 Sep Gallatin and Madison County Mountains and Centennial Mountains

Cloudy. Lows in the upper 30s. South Winds up to 10 Mph. Gusts up to 30 Mph decreasing to 20 Mph after midnight.

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Crystal Lake Temperature Statistics

September Temperature

Dillon, Dillon Airport (30.4 miles)

  • Lowest 15 September, 2026

    31.6 °F

  • Average September

    58.6 °F

  • Highest 10 September, 2026

    83.6 °F

Climate (2021–2026)

Dillon, Dillon Airport (30.4 miles)

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  • Average Low 2021–2026

    31.6 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    57 °F
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