About Pinckneyville, IL's Climate & Weather History

Pinckneyville, in Illinois, United States, is home to roughly 5,400 people in the Central Time Zone at 38.1°N latitude.

In 2025, Pinckneyville recorded an average annual temperature of 57°F — about 0.9°F above the 30-year normal of 56°F. The hottest day reached 95°F in July; the coldest was 1°F in February. Total precipitation was 44 inches (near normal). The wettest month was April.