Waukegan Regional Airport Weather Forecast

    • 77
    • 89

    Mostly Sunny

    • 71
    • 91

    Chance Thunderstorms

    • 68
    • 79

    Chance Thunderstorms

    • 70
    • 85

    Chance Thunderstorms

    • 72
    • 87

    Mostly Sunny

    • 73
    • 91

    Slight Chance Thunderstorms

    • 67
    • 82

    Slight Chance Thunderstorms

Today 23 Jul Lake

Mostly cloudy late in the Morning, then becoming partly cloudy. A slight chance of Showers and Thunderstorms late in the morning. A slight chance of Showers and Thunderstorms late in the afternoon. Hot and humid. Highs in the lower 90s. South Winds 10 to 15 Mph. Chance of precipitation 20 percent. Heat index Values up to 104 in the afternoon.

Tonight 23 Jul Lake

Mostly clear. Warm and humid. Lows in the mid 70s. Southwest Winds around 10 Mph. Heat index Values up to 101 early in the evening.

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Waukegan Regional Airport Temperature Statistics

July Temperature

Chicago/Waukegan Regional Airport (0 miles)

  • Lowest 17 July, 2025

    55.7 °F
  • Average July

    74.5 °F
  • Highest 5 July, 2025

    93.7 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (0 miles)

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  • Average Low 2020–2025

    42.2 °F
  • Average 2020–2025

    51 °F
  • Average High 2020–2025

    59.5 °F
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