Mundelein, IL has a humid continental climate with four distinct seasons. Summers are warm and humid with temperatures often reaching into the high 80s and low 90s while winters can be quite cold with lows in the single digits and occasional snowfall. The spring and fall months tend to be milder, but still have unpredictable weather patterns. Precipitation is fairly evenly distributed throughout the year, averaging around 34 inches per year.
Mundelein, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mundelein averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 187 sunny days per year in Mundelein. The US average is 205 sunny days.
Mundelein gets some kind of precipitation, on average, 120 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 82 degrees
Winter Low: the January low is 14
Rain: averages 36 inches of rain a year
Snow: averages 41 inches of snow a year