Cottonwood Lake Weather Forecast

    • 39
    • 46

    Rain Showers

    • 45
    • 52

    Rain Showers

    • 45
    • 55

    Rain Showers

    • 38
    • 56

    Chance Rain Showers

    • 33
    • 53

    Mostly Sunny

    • 38
    • 57

    Mostly Sunny

Today 14 Oct McHenry

Cloudy with scattered rain Showers. Highs in the mid 40s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.

Tonight 14 Oct McHenry

Mostly cloudy. A slight chance of Showers in the evening. Lows in the upper 30s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

October Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 7 October, 2025

    28.4 °F

  • Average October

    55.6 °F

  • Highest 2 October, 2025

    86 °F

Climate (2020–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2020–2025

    30.2 °F

  • Average 2020–2025

    41.2 °F

  • Average High 2020–2025

    52 °F
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