Crystal Lake Weather Forecast

    • 63
    • 77

    Chance Rain Showers

    • 64
    • 80

    Chance Thunderstorms

    • 62
    • 83

    Rain Showers

    • 53
    • 78

    Mostly Sunny

    • 57
    • 78

    Mostly Sunny

    • 58
    • 81

    Chance Rain Showers

    • 56
    • 78

    Chance Rain Showers

Today 6 Sep Hancock

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 6 Sep Hancock

A slight chance of Thunderstorms this evening. Mostly cloudy with a slight chance of Showers. Lows in the lower 60s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

September Temperature

Forest City Municipal Airport (8.1 miles)

  • Lowest 1 September, 2026

    62.6 °F

  • Average September

    76 °F

  • Highest 4 September, 2026

    89.6 °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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