Cottonwood Lake Weather Forecast

    • 31
    • 46

    Partly Sunny

    • 26
    • 47

    Mostly Cloudy

    • 27
    • 45

    Partly Sunny

    • 22
    • 36

    Rain/Snow

    • 10
    • 27

    Chance Snow

    • 4
    • 22

    Slight Chance Snow

Today 14 Feb McHenry

Patchy fog early in the morning. Partly sunny. Highs around 40. Light and variable Winds, becoming northwest around 5 Mph in the afternoon.

Tonight 14 Feb McHenry

Partly cloudy. Lows in the upper 20s. Southeast Winds around 5 Mph, becoming southwest after midnight.

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Cottonwood Lake Temperature Statistics

February Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 2 February, 2026

    8.6 °F

  • Average February

    29.1 °F

  • Highest 12 February, 2026

    48.2 °F

Climate (2021–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.3 °F

  • Average High 2021–2026

    52.1 °F
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