Illinois, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Illinois averages 22 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Illinois. The US average is 205 sunny days.
Illinois gets some kind of precipitation, on average, 108 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.
Summer High: the July high is around 86 degrees
Winter Low: the January low is 17
Rain: averages 40 inches of rain a year
Snow: averages 22 inches of snow a year
BESTPLACES COMFORT INDEX
Illinois's annual BestPlaces Comfort Index of 7.1 (10=best) indicates it is about average compared to other states in the United States.
7.1 / 10
September, June and May are the most pleasant months in the state of Illinois, while January and December are the least comfortable months.