Waukegan Weather Forecast

    • 44
    • 52

    Decreasing Clouds

    • 46
    • 57

    Mostly Sunny

    • 47
    • 55

    Partly Sunny

    • 46
    • 55

    Chance Rain

    • 43
    • 53

    Slight Chance Rain Showers

    • 42
    • 53

    Partly Sunny

    • 40
    • 54

    Mostly Cloudy

Today 25 Oct Lake

Mostly cloudy. A slight chance of Sprinkles late in the Morning, then a slight chance of Showers in the late morning and early afternoon. A slight chance of Sprinkles late. Highs in the lower 50s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 25 Oct Lake

Mostly cloudy in the Evening, then becoming partly cloudy after midnight. A slight chance of Sprinkles early in the evening. Lows in the lower 40s. East Winds 5 to 10 Mph.

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  • Temperature Real-Time

Waukegan Temperature Statistics

October Temperature

Chicago/Waukegan Regional Airport (3.7 miles)

  • Lowest 23 October, 2025

    37 °F

  • Average October

    60.1 °F

  • Highest 3 October, 2025

    90 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (3.7 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    59.7 °F
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