Rosemont, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rosemont averages 36 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Rosemont. The US average is 205 sunny days.
Rosemont gets some kind of precipitation, on average, 125 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 84 degrees
Winter Low: the January low is 17
Rain: averages 36 inches of rain a year
Snow: averages 36 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Rosemont is 6.9 (10=best), which means it is less comfortable than most places in Illinois.
6.9 / 10
June, September and August are the most pleasant months in Rosemont, while January and December are the least comfortable months.