Cottonwood Lake Weather Forecast

    • 61
    • 82

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

    • 65
    • 96

    Chance Rain Showers

    • 68
    • 97

    Hot

    • 65
    • 96

    Hot

    • 64
    • 91

    Partly Sunny

Today 22 Jul McHenry

Sunny. Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 22 Jul McHenry

Mostly clear. Lows around 60. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

July Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 8 July, 2026

    51.8 °F

  • Average July

    72.9 °F

  • Highest 12 July, 2026

    93.2 °F

Climate (2021–2026)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.8 °F
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