Cottonwood Lake Weather Forecast

    • -8
    • 7

    Cold

    • -14
    • 6

    Cold

    • -3
    • 6

    Cold

    • 17
    • 29

    Chance Snow

    • 11
    • 28

    Mostly Cloudy

    • 16
    • 26

    Mostly Cloudy

Today 28 Jan McHenry

Mostly sunny. Highs zero to 5 above. Northwest Winds around 5 Mph.

Tonight 28 Jan McHenry

Increasing Clouds. Lows around 15 below. Light and variable Winds.

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  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

January Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 25 January, 2026

    -25.6 °F

  • Average January

    11.8 °F

  • Highest 7 January, 2026

    41 °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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