About Colfax, IL's Climate & Weather History

Colfax, in Illinois, United States, is home to roughly 1,000 people in the Central Time Zone at 40.6°N latitude.

In 2025, Colfax recorded an average annual temperature of 53°F — right at the 30-year normal of 52°F. The hottest day reached 93°F in July; the coldest was -7°F in January. Total precipitation was 30 inches (drier than usual). The wettest month was June.