Streamwood, IL has a temperate climate with four distinct seasons. Summers are hot and humid, with temperatures averaging in the mid 80s during the day and dropping to the low 60s at night. Winters are generally mild, though temperatures can drop to freezing or below on occasion. Spring and fall are usually pleasant, with temperatures ranging between 50-80 degrees Fahrenheit. Rainfall is fairly evenly distributed throughout the year, averaging around 40 inches annually.
Streamwood, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Streamwood averages 33 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 Streamwood. The US average is 205 sunny days.
Streamwood gets some kind of precipitation, on average, 121 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 12
Rain: averages 38 inches of rain a year
Snow: averages 33 inches of snow a year