Waukegan Regional Airport Weather Forecast

    • 51
    • 64

    Increasing Clouds

    • 44
    • 68

    Mostly Sunny

    • 44
    • 62

    Sunny

    • 51
    • 66

    Mostly Sunny

    • 47
    • 70

    Partly Sunny

    • 48
    • 67

    Partly Sunny

    • 51
    • 66

    Mostly Sunny

Today 3 Oct Lake

Mostly sunny. Highs in the lower 70s.

Tonight 3 Oct Lake

Partly cloudy. A slight chance of Sprinkles after midnight. Lows around 50. South Winds 5 to 10 Mph, becoming southwest after midnight.

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Waukegan Regional Airport Temperature Statistics

October Temperature

Chicago/Waukegan Regional Airport (0 miles)

  • Lowest 1 October, 2026

    60.1 °F

  • Average October

    63.8 °F

  • Highest 1 October, 2026

    68 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (0 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.7 °F
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