About Streator, IL's Climate & Weather History

With a population of around 13,200, Streator sits in Illinois, United States. The city operates in the Central Time Zone.

In 2025, Streator recorded an average annual temperature of 53°F. The hottest temperatures reached 92°F in June; the coolest were -9°F in January. Total precipitation for the year was 32 inches, with the wettest month being July. Snowfall for the year totaled approximately 9 inches.