Waukegan Weather Forecast

    • 21
    • 26

    Slight Chance Snow

    • 5
    • 28

    Chance Snow

    • -3
    • 12

    Chance Snow

    • 1
    • 11

    Partly Sunny

    • 17
    • 23

    Mostly Cloudy

    • 31
    • 36

    Mostly Cloudy

    • 33
    • 42

    Chance Rain

Today 11 Dec Lake

Partly cloudy in the Morning, then becoming mostly cloudy. Highs in the mid 20s. West Winds 5 to 10 Mph.

Tonight 11 Dec Lake

Cloudy. A slight chance of Flurries in the late evening and early morning. A slight chance of snow late. Near steady temperature in the lower 20s. North Winds around 5 Mph. Chance of precipitation 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Waukegan Temperature Statistics

December Temperature

Chicago/Waukegan Regional Airport (3.7 miles)

  • Lowest 4 December, 2025

    3.9 °F

  • Average December

    21.7 °F

  • Highest 9 December, 2025

    37 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (3.7 miles)

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

  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    59.6 °F
Get WillyWeather+ to remove ads