Knollwood, IL has a mild climate with four distinct seasons. Summers are usually warm and humid with temperatures reaching into the high-80s. Winters are cold but not as severe as in some other states, with snowfall averaging around 6 inches per year. Spring and fall are typically pleasant seasons, with temperatures ranging from the low-40s to mid-70s. The area typically receives average levels of precipitation throughout the year, with most of it falling between March and August. In general, Knollwood enjoys a comfortable climate that makes it a great place to live all year round.
Knollwood, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Knollwood averages 38 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 189 sunny days per year in Knollwood. The US average is 205 sunny days.
Knollwood 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 81 degrees
Winter Low: the January low is 16
Rain: averages 36 inches of rain a year
Snow: averages 38 inches of snow a year