About Coal City, IL's Climate & Weather History

Coal City is a city of approximately 5,500 people in Illinois, United States. Located in the Central Time Zone at 41.3°N latitude.

In 2025, Coal City recorded an average annual temperature of 52°F. The hottest temperatures reached 93°F in June; the coolest were -8°F in January. Total precipitation for the year was 34 inches, with the wettest month being July. Snowfall for the year totaled approximately 9 inches.