Granite City, Illinois gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Granite City averages 15 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 204 sunny days per year in Granite City. The US average is 205 sunny days.
Granite City gets some kind of precipitation, on average, 103 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 88 degrees
Winter Low: the January low is 22
Rain: averages 42 inches of rain a year
Snow: averages 15 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Granite City is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.
7.2 / 10
September, May and October are the most pleasant months in Granite City, while January and December are the least comfortable months.