Winnebago, IL County experiences a humid continental climate with mild winters and hot summers. The average winter low temperatures range from the 20s to the 30s while summer highs can reach into the 80s and even 90s. Precipitation is fairly evenly spread throughout the year, while snowfall averages around 30 inches annually. Winnebago enjoys long summer days with some of the shortest nights in the area, which helps to keep temperatures cool during those warm months. Overall, Winnebago has a pleasant climate that provides plenty of sunshine for outdoor activities.
Winnebago County, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Winnebago County averages 35 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 Winnebago County. The US average is 205 sunny days.
Winnebago County gets some kind of precipitation, on average, 116 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 37 inches of rain a year
Snow: averages 35 inches of snow a year