Cottonwood Lake Weather Forecast

    • 28
    • 45

    Mostly Cloudy

    • 30
    • 42

    Mostly Cloudy

    • 30
    • 43

    Mostly Cloudy

    • 29
    • 44

    Chance Rain

    • 22
    • 42

    Partly Sunny

    • 27
    • 42

    Partly Sunny

Today 16 Nov McHenry

Partly sunny. Highs in the lower 40s. Southeast Winds around 5 Mph.

Tonight 16 Nov McHenry

Mostly cloudy. Lows in the upper 20s. East Winds 5 to 10 Mph.

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Cottonwood Lake Temperature Statistics

November Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 10 November, 2025

    12.2 °F

  • Average November

    37 °F

  • Highest 14 November, 2025

    69.8 °F

Climate (2020–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2020–2025

    30.4 °F

  • Average 2020–2025

    41.4 °F

  • Average High 2020–2025

    52.1 °F
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