Cottonwood Lake Weather Forecast

    • 17
    • 25

    Mostly Cloudy

    • 26
    • 39

    Breezy

    • 20
    • 45

    Slight Chance Snow

    • -3
    • 40

    Rain/Snow

    • -7
    • 6

    Cold

    • 3
    • 32

    Slight Chance Snow

    • -3
    • 14

    Partly Sunny

Today 14 Dec McHenry

Partly sunny. Not as cold. Highs 15 to 20. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 14 Dec McHenry

Mostly cloudy. Not as cold. Lows 10 to 15. Temperature rising after midnight. Southwest Winds around 5 Mph, becoming west after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Cottonwood Lake Temperature Statistics

December Temperature

Harvey Municipal Airport (34.8 miles)

  • Lowest 7 December, 2025

    -18.4 °F

  • Average December

    10.6 °F

  • Highest 9 December, 2025

    35.6 °F

Climate (2020–Present)

Harvey Municipal Airport (34.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    30.3 °F

  • Average 2020–2025

    41.3 °F

  • Average High 2020–2025

    52 °F
Get WillyWeather+ to remove ads