Cottonwood Lake Weather Forecast

    • 26
    • 51

    Gradual Clearing

    • 32
    • 53

    Partly Sunny

    • 32
    • 55

    Partly Sunny

    • 34
    • 57

    Partly Sunny

    • 43
    • 69

    Partly Sunny

    • 40
    • 69

    Partly Sunny

Today 27 Apr McHenry

Partly sunny. Highs in the lower 50s. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 27 Apr McHenry

Mostly cloudy with a slight chance of rain. A slight chance of snow after midnight. Lows in the lower 30s. Northeast Winds around 15 Mph. Chance of precipitation 20 percent.

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Cottonwood Lake Temperature Statistics

April Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 6 April, 2026

    15.8 °F

  • Average April

    34.8 °F

  • Highest 12 April, 2026

    71.6 °F

Climate (2021–Present)

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

    51.9 °F
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