About Dunlap, IL's Climate & Weather History

Dunlap, in Illinois, United States, is home to roughly 1,400 people in the Central Time Zone at 40.9°N latitude.

In 2025, Dunlap recorded an average annual temperature of 53°F — right at the 30-year normal of 53°F. The hottest day reached 93°F in June; the coldest was -9°F in January. Total precipitation was 33 inches (drier than usual). Snowfall totaled 9 inches, below the 26-inch average. The wettest month was July.