Crystal Lake Weather Forecast

    • 30
    • 37

    Slight Chance Snow

    • 32
    • 49

    Mostly Sunny

    • 41
    • 54

    Mostly Sunny

    • 41
    • 55

    Partly Sunny

    • 43
    • 57

    Mostly Cloudy

    • 34
    • 51

    Chance Rain/Snow

Today 20 Oct Snowy and Judith Mountains

Windy, cooler. Snow and rain late in the Morning, then slight chance of snow in the afternoon. New snow accumulation up to 3 Inches. Snow level 5000 feet. Highs 40 to 45. Northwest Winds 20 to 30 Mph. Chance of precipitation near 100 percent.

Tonight 20 Oct Snowy and Judith Mountains

Breezy, Colder. Mostly clear. Lows 25 to 30. West Winds 15 to 25 Mph decreasing to 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

October Temperature

Lewistown, Lewistown Municipal Airport (16.8 miles)

  • Lowest 6 October, 2025

    28 °F

  • Average October

    45.6 °F

  • Highest 10 October, 2025

    75 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (16.8 miles)

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  • Average Low 2020–2025

    32.3 °F

  • Average 2020–2025

    44.4 °F

  • Average High 2020–2025

    56.3 °F
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