Cottonwood Lake Weather Forecast

    • 25
    • 38

    Partly Sunny

    • 24
    • 43

    Partly Sunny

    • 27
    • 44

    Mostly Sunny

    • 27
    • 48

    Partly Sunny

    • 25
    • 45

    Partly Sunny

    • 25
    • 44

    Partly Sunny

Today 10 Feb McHenry

Mostly sunny. Highs in the mid 30s. Northwest Winds 5 to 10 Mph.

Tonight 10 Feb McHenry

Decreasing Clouds. Lows around 20. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

February Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 2 February, 2026

    8.6 °F

  • Average February

    26.8 °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

    30.2 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    52 °F
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