Sterling, in Illinois, United States, is home to roughly 15,100 people in the Central Time Zone at 41.8°N latitude.
In 2025, Sterling recorded an average annual temperature of 51°F. The hottest temperatures reached 95°F in June; the coolest were -11°F in January. Total precipitation for the year was 31 inches, with the wettest month being July. Snowfall for the year totaled approximately 9 inches.
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