Hillside, IL has a temperate climate with four distinct seasons. The winters are cold and snowy, with temperatures typically ranging between 25-35 degrees Fahrenheit. Springtime brings warm weather and blooming flowers as temperatures increase to the 50-60 degree range. Summers in Hillside are hot and humid, with average highs in the mid 80s. Fall brings cooler temperatures and colorful foliage as the temperature dips back into the 50s. Precipitation is fairly consistent throughout the year, although snowfall is usually higher during the winter months.
Hillside, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Hillside averages 34 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 186 sunny days per year in Hillside. The US average is 205 sunny days.
Hillside 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 84 degrees
Winter Low: the January low is 15
Rain: averages 38 inches of rain a year
Snow: averages 34 inches of snow a year