Cottonwood Lake Weather Forecast

    • 36
    • 48

    Chance Rain

    • 26
    • 59

    Breezy

    • 24
    • 36

    Chance Snow

    • 22
    • 38

    Slight Chance Snow

    • 24
    • 39

    Partly Sunny

    • 20
    • 47

    Chance Rain/Snow

Today 7 Mar McHenry

Partly sunny. A chance of rain in the afternoon. Not as cool. Highs in the upper 40s. Southwest Winds 10 to 20 Mph. Gusts up to 35 Mph in the afternoon. Chance of rain 30 percent.

Tonight 7 Mar McHenry

Increasing Clouds. Not as cold. Lows in the mid 30s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

March Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 1 March, 2026

    -0.4 °F

  • Average March

    18.8 °F

  • Highest 2 March, 2026

    42.8 °F

Climate (2021–Present)

Harvey Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.3 °F

  • Average High 2021–2026

    52.1 °F
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