Cottonwood Lake National Wildlife Refuge Weather Forecast

    • 26
    • 50

    Increasing Clouds

    • 26
    • 41

    Partly Sunny

    • 32
    • 52

    Mostly Sunny

    • 32
    • 56

    Mostly Sunny

    • 39
    • 57

    Partly Sunny

    • 32
    • 57

    Mostly Sunny

Today 4 Nov McHenry

Areas of fog early in the morning. Mostly sunny. Highs in the upper 40s. Northwest Winds 5 to 10 Mph.

Tonight 4 Nov McHenry

Increasing Clouds. Lows in the mid 20s. North Winds around 5 Mph.

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Cottonwood Lake National Wildlife Refuge Temperature Statistics

November Temperature

Harvey Municipal Airport (34.2 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 (34.2 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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