Chicago Heights, IL has a humid continental climate with warm, wet summers and cold, dry winters. During the summer months temperatures can reach into the mid-80s Fahrenheit with humidity levels at nearly 60%. Winters in Chicago Heights typically bring temperatures below freezing and snowfall is common. Spring and fall are mild, but even then temperatures can range from above freezing to near zero, making for unpredictable weather conditions. Precipitation is spread fairly evenly throughout the year with an average of 33 inches annually.
Chicago Heights, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Chicago Heights averages 28 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Chicago Heights. The US average is 205 sunny days.
Chicago Heights gets some kind of precipitation, on average, 110 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 39 inches of rain a year
Snow: averages 28 inches of snow a year