Crystal Lake Weather Forecast

    • 47
    • 60

    Mostly Sunny

    • 47
    • 64

    Partly Sunny

    • 23
    • 51

    Blizzard

    • 24
    • 37

    Mostly Sunny

    • 24
    • 37

    Partly Sunny

    • 29
    • 41

    Mostly Cloudy

    • 27
    • 44

    Chance Snow

Today 21 Oct Snowy and Judith Mountains

Mostly sunny. A 20 percent chance of snow in the morning. Highs 39 to 45.

Tonight 21 Oct Snowy and Judith Mountains

Mostly clear. Lows 43 to 49. South Winds up to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

October Temperature

Lewistown, Lewistown Municipal Airport (16.8 miles)

  • Lowest 13 October, 2026

    19.7 °F

  • Average October

    48.1 °F

  • Highest 5 October, 2026

    84.7 °F

Climate (2021–2026)

Lewistown, Lewistown Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    32.6 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    57 °F
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