Waukegan · United States
Weather in Waukegan in September
In September the typical daytime high in Waukegan is 23.9 °C on average, from 26.2 °C at the start to 20.9 °C at the end of the month.
The last 10 years were 2.2 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Green Bay (238 km) and Rock Is L&D (244 km); nearer ones count more.