Cottonwood Lake Weather Forecast

    • 56
    • 80

    Chance Rain Showers

    • 56
    • 76

    Chance Rain Showers

    • 55
    • 71

    Rain Showers

    • 51
    • 74

    Partly Sunny

    • 54
    • 74

    Chance Rain Showers

    • 55
    • 80

    Chance Rain Showers

    • 54
    • 77

    Chance Rain Showers

Today 12 Aug McHenry

Mostly cloudy with a slight chance of Showers and Thunderstorms. Highs around 80. North Winds 5 to 10 Mph.

Tonight 12 Aug McHenry

A slight chance of Thunderstorms in the evening. Mostly cloudy with a slight chance of Showers. Lows in the mid 50s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

August Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 5 August, 2026

    42.8 °F

  • Average August

    67.8 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    51.8 °F
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