Crystal Lake Weather Forecast

    • 59
    • 70

    Rain Showers

    • 56
    • 72

    Chance Rain Showers

    • 54
    • 72

    Chance Rain Showers

    • 57
    • 77

    Partly Sunny

    • 57
    • 81

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

Today 17 Sep Aurora

Showers. Thunderstorms Likely, mainly this morning. Not as warm with Highs around 70. Northeast Winds 5 to 10 Mph, becoming southeast with Gusts up to 20 Mph this afternoon. Chance of rain 90 percent.

Tonight 17 Sep Aurora

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Lows in the upper 50s. East Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

September Temperature

Mitchell, Mitchell Municipal Airport (28 miles)

  • Lowest 7 September, 2025

    36 °F

  • Average September

    65.3 °F

  • Highest 12 September, 2025

    87.1 °F

Climate (2020–Present)

Mitchell, Mitchell Municipal Airport (28 miles)

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  • Average Low 2020–2025

    38 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    60.9 °F
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