Cottonwood Lake Weather Forecast

    • 2
    • 37

    Snow

    • -6
    • 8

    Blowing Snow

    • 8
    • 21

    Partly Sunny

    • 5
    • 32

    Mostly Cloudy

    • 10
    • 19

    Mostly Cloudy

    • 11
    • 26

    Mostly Cloudy

Today 19 Dec McHenry

Cloudy with snow possibly mixed with sleet in the Morning, then sunny in the afternoon. Blowing and Drifting snow in the Morning, then patchy blowing and Drifting snow in the afternoon. Windy. Not as cold. Snow and sleet accumulation around an inch. Highs in the mid 30s. South Winds 20 to 30 Mph with Gusts up to 45 Mph. Wind Chills around 20 below in the morning.

Tonight 19 Dec McHenry

Partly cloudy. Patchy blowing and Drifting snow. Blustery. Lows around 5 below. West Winds around 25 Mph with Gusts up to 40 Mph. Wind Chills around 20 below after midnight.

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Cottonwood Lake Temperature Statistics

December Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 7 December, 2025

    -18.4 °F

  • Average December

    11.9 °F

  • Highest 16 December, 2025

    44.6 °F

Climate (2020–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2020–2025

    30.3 °F

  • Average 2020–2025

    41.3 °F

  • Average High 2020–2025

    52 °F
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