Cottonwood Lake Weather Forecast

    • 55
    • 76

    Becoming Sunny

    • 61
    • 85

    Chance Thunderstorms

    • 66
    • 88

    Mostly Sunny

    • 72
    • 95

    Mostly Sunny

    • 74
    • 103

    Breezy

    • 68
    • 98

    Hot

Today 8 Jul McHenry

Mostly sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 8 Jul McHenry

Mostly clear. Lows in the mid 50s. Southeast Winds around 5 Mph.

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Cottonwood Lake Temperature Statistics

July Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 2 July, 2026

    55.4 °F

  • Average July

    70.4 °F

  • Highest 5 July, 2026

    87.8 °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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