Detroit, IL has a humid continental climate with four distinct seasons. Summers are typically hot and humid with temperatures reaching the mid-80s on average. Winters are cold and snowy, with temperatures hovering around the freezing point. Spring and fall are pleasant with temperatures in the mid- to upper 60s. Precipitation is common throughout the year, but it is especially frequent during spring and summer months. Snowfall averages between 30 and 40 inches during winter months. This makes Detroit an ideal place for outdoor activities all year long!
Detroit, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Detroit averages 17 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Detroit. The US average is 205 sunny days.
Detroit gets some kind of precipitation, on average, 103 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 87 degrees
Winter Low: the January low is 17
Rain: averages 40 inches of rain a year
Snow: averages 17 inches of snow a year