Crystal Lake Weather Forecast

    • 56
    • 79

    Increasing Clouds

    • 63
    • 81

    Partly Sunny

    • 63
    • 84

    Slight Chance Thunderstorms

    • 59
    • 81

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 60
    • 80

    Chance Rain Showers

Today 23 Aug Hancock

Sunny. Highs in the upper 70s. Northwest Winds around 5 Mph.

Tonight 23 Aug Hancock

Sunny Early, then becoming partly cloudy. Lows in the mid 50s. Northwest Winds around 5 Mph, becoming southeast.

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Crystal Lake Temperature Statistics

August Temperature

Forest City Municipal Airport (8.1 miles)

  • Lowest 6 August, 2026

    50 °F

  • Average August

    69.8 °F

  • Highest 11 August, 2026

    86 °F

Climate (2021–2026)

Forest City Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    47.1 °F

  • Average High 2021–2026

    57.3 °F
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