Cottonwood Lake Weather Forecast

    • 21
    • 34

    Becoming Sunny

    • 34
    • 43

    Breezy

    • 26
    • 45

    Chance Rain/Snow

    • 27
    • 44

    Partly Sunny

    • 35
    • 55

    Partly Sunny

    • 39
    • 61

    Mostly Cloudy

Today 6 Apr McHenry

Sunny. Highs in the mid 30s. North Winds 5 to 10 Mph.

Tonight 6 Apr McHenry

Increasing Clouds. Lows in the lower 20s. Southeast Winds 5 to 15 Mph.

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  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

April Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 1 April, 2026

    23 °F

  • Average April

    29.9 °F

  • Highest 1 April, 2026

    33.8 °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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