Crystal Lake Weather Forecast

    • 30
    • 47

    Increasing Clouds

    • 27
    • 39

    Rain/Snow

    • 23
    • 33

    Chance Snow

    • 11
    • 28

    Chance Snow

    • 20
    • 25

    Partly Sunny

    • 27
    • 40

    Partly Sunny

Today 7 Jan Hancock

Sunny. Highs in the mid 40s. South Winds around 10 Mph.

Tonight 7 Jan Hancock

Mostly clear Early, then becoming mostly cloudy. Lows in the lower 30s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

January Temperature

Forest City Municipal Airport (8.1 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    23.3 °F

  • Highest 4 January, 2026

    33.8 °F

Climate (2021–Present)

Forest City Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    36.7 °F

  • Average 2021–2026

    47.2 °F

  • Average High 2021–2026

    57.3 °F
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