United States
Weather in Waukegan through the year
The average of the weather stations Green Bay (238 km) and Rock Is L&D (244 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | -1.6 °C | -2.2 °C – -0.7 °C |
| February | 0.6 °C | -1.1 °C – 3.0 °C |
| March | 7.0 °C | 3.4 °C – 10.2 °C |
| April | 14.2 °C | 10.5 °C – 17.4 °C |
| May | 21.2 °C | 17.7 °C – 24.6 °C |
| June | 26.7 °C | 24.8 °C – 28.2 °C |
| July | 28.5 °C | 28.2 °C – 28.6 °C |
| August | 27.4 °C | 26.4 °C – 28.2 °C |
| September | 23.9 °C | 20.9 °C – 26.2 °C |
| October | 16.5 °C | 12.3 °C – 20.7 °C |
| November | 7.9 °C | 3.9 °C – 12.0 °C |
| December | 1.1 °C | -0.7 °C – 3.5 °C |