Glen Carbon, IL has a humid continental climate, characterized by hot, humid summers and cool to cold winters. The average annual temperature is around 52°F (11°C), with the warmest month being July and the coldest month being January. Precipitation levels are fairly moderate, averaging around 42 inches (1070 mm) each year. Winters tend to be cloudy and wet, while summers are typically sunny and dry. Snowfall is common during winter months as well.
Glen Carbon (zip 62034), Illinois gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Glen Carbon (zip 62034) averages 12 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 Glen Carbon (zip 62034). The US average is 205 sunny days.
Glen Carbon (zip 62034) gets some kind of precipitation, on average, 99 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 89 degrees
Winter Low: the January low is 22
Rain: averages 43 inches of rain a year
Snow: averages 12 inches of snow a year