Cottonwood Lake Weather Forecast

    • 26
    • 40

    Patchy Fog

    • 31
    • 49

    Partly Sunny

    • 25
    • 39

    Chance Snow

    • 21
    • 37

    Slight Chance Snow

    • 24
    • 41

    Partly Sunny

    • 23
    • 41

    Mostly Sunny

Today 7 Feb McHenry

Cloudy. Patchy fog in the morning. Highs in the upper 30s. Southeast Winds around 15 Mph, becoming southwest 5 to 15 Mph in the afternoon.

Tonight 7 Feb McHenry

Mostly cloudy. Patchy fog. Lows in the mid 20s. Northwest 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

    24.9 °F

  • Highest 5 February, 2026

    46.4 °F

Climate (2021–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.1 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    51.9 °F
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