Granite City, IL (62040) has a humid continental climate which features hot and humid summers and cold winters. During the summer months, high temperatures usually reach into the mid 80s Fahrenheit (29-31 Celsius) with plenty of humidity in the air. On average, Granite City receives around 37 inches of rain per year with October being the wettest month with 4.5 inches of rain and June usually being the driest month with only 2.5 inches of rainfall. Winters are generally quite cold in Granite City, with temperatures dipping to below freezing during most days and snowfall averaging around 18 inches each year.
Granite City (zip 62040), Illinois gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Granite City (zip 62040) averages 15 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Granite City (zip 62040). The US average is 205 sunny days.
Granite City (zip 62040) 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.
Weather Highlights
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