Waukegan Regional Airport Weather Forecast
- 58
- 74
Mostly Cloudy
- 60
- 76
Partly Sunny
- 60
- 75
Mostly Sunny
- 65
- 82
Slight Chance Thunderstorms
- 64
- 85
Slight Chance Thunderstorms
- 64
- 79
Partly Sunny
- 63
- 78
Partly Sunny
Today 9 Sep Lake
Partly cloudy in the Morning, then becoming mostly cloudy. Highs in the mid 70s. South Winds 5 to 10 Mph.
Tonight 9 Sep Lake
Mostly cloudy. Lows in the upper 50s. South Winds around 5 Mph.
Waukegan Regional Airport Temperature Statistics
September Temperature
Chicago/Waukegan Regional Airport (0 miles)
Lowest 4 September, 2025
46 °FAverage September
61.1 °FHighest 2 September, 2025
79 °F
Climate (2020–Present)
Chicago/Waukegan Regional Airport (0 miles)
Average Low 2020–2025
42.2 °FAverage 2020–2025
51 °FAverage High 2020–2025
59.5 °F