Wilmington, IL has a humid continental climate with warm, humid summers and cold winters. The average high temperature during the summer is about 82°F (28°C) while the average low temperature in the winter dips down to around 22°F (-6°C). Precipitation is fairly evenly distributed throughout the year, with an average of 35.7 inches per year. Snowfall averages around 41 inches annually, providing residents plenty of opportunities for outdoor winter activities.
Wilmington, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Wilmington averages 24 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Wilmington. The US average is 205 sunny days.
Wilmington gets some kind of precipitation, on average, 123 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 84 degrees
Winter Low: the January low is 16
Rain: averages 37 inches of rain a year
Snow: averages 24 inches of snow a year