Cottonwood Lake Weather Forecast

    • 60
    • 84

    Increasing Clouds

    • 58
    • 82

    Chance Rain Showers

    • 66
    • 88

    Mostly Sunny

    • 61
    • 88

    Partly Sunny

    • 56
    • 79

    Chance Rain Showers

    • 55
    • 73

    Chance Rain Showers

    • 51
    • 73

    Chance Rain Showers

Today 2 Sep McHenry

Sunny. Highs in the lower 80s. Southeast Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 2 Sep McHenry

Increasing Clouds. Lows in the upper 50s. East Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Cottonwood Lake Temperature Statistics

September Temperature

Harvey Municipal Airport (34.8 miles)

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  • Average September

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Climate (2021–2026)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.8 °F
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