Cottonwood Lake Weather Forecast

    • -14
    • 20

    Slight Chance Snow

    • -26
    • -3

    Blowing Snow

    • -23
    • -12

    Cold

    • -21
    • -3

    Cold

    • -8
    • 2

    Cold

    • 1
    • 18

    Mostly Cloudy

Today 21 Jan McHenry

Mostly cloudy with a 30 percent chance of snow. Patchy blowing and Drifting snow. Windy. Little or no new snow accumulation. Highs 15 to 20. Temperature falling to around 10 in the afternoon. Northwest Winds 20 to 30 Mph with Gusts up to 45 Mph.

Tonight 21 Jan McHenry

Decreasing Clouds. Patchy blowing and Drifting snow in the evening. A slight chance of Flurries. Colder. Lows around 15 below. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Wind Chills around 30 below after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

January Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 17 January, 2026

    -9.4 °F

  • Average January

    18.1 °F

  • Highest 7 January, 2026

    41 °F

Climate (2021–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.2 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.9 °F
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