Waukegan, IL has a temperate climate that is humid throughout the whole year. The summers are hot and humid, while the winters are cold and often snowy. The city experiences an average of 38 inches of rainfall per year, with most of it falling from April to October. The average summer temperature is around 77°F, while the average winter temperature drops down to 25°F. The area is also known for its frequent thunderstorms during the summer months and occasional snow storms in the winter. Despite some extreme weather conditions at times, Waukegan enjoys four distinct seasons throughout the year.
Waukegan, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Waukegan averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Waukegan. The US average is 205 sunny days.
Waukegan gets some kind of precipitation, on average, 117 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 15
Rain: averages 36 inches of rain a year
Snow: averages 41 inches of snow a year