Cottonwood Lake Weather Forecast

    • -6
    • 8

    Cold

    • -4
    • 7

    Cold

    • 19
    • 31

    Partly Sunny

    • 5
    • 28

    Chance Snow

    • 14
    • 27

    Partly Sunny

    • 25
    • 41

    Partly Sunny

Today 21 Feb McHenry

Increasing Clouds. Highs 5 to 10 above. Northwest Winds around 15 Mph with Gusts up to 25 Mph. Wind Chills around 25 below.

Tonight 21 Feb McHenry

Partly cloudy. Lows around 10 below. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind Chills around 25 below.

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Cottonwood Lake Temperature Statistics

February Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 19 February, 2026

    -5.8 °F

  • Average February

    28.3 °F

  • Highest 13 February, 2026

    50 °F

Climate (2021–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    41.4 °F

  • Average High 2021–2026

    52.2 °F
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