Cottonwood Lake Weather Forecast

    • 27
    • 41

    Mostly Cloudy

    • 33
    • 52

    Mostly Sunny

    • 33
    • 58

    Mostly Sunny

    • 41
    • 60

    Partly Sunny

    • 33
    • 57

    Partly Sunny

    • 35
    • 54

    Partly Sunny

Today 5 Nov McHenry

Decreasing Clouds. Patchy fog in the morning. Highs in the lower 40s. Northeast Winds around 5 Mph, becoming southeast up to 5 Mph in the afternoon.

Tonight 5 Nov McHenry

Partly cloudy. Lows in the lower 20s. South Winds 5 to 10 Mph.

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Cottonwood Lake Temperature Statistics

November Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 2 November, 2026

    44.6 °F

  • Average November

    53.3 °F

  • Highest 1 November, 2026

    60.8 °F

Climate (2021–2026)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.8 °F
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