About Sidney, IL

Sidney is a city of approximately 1,200 people in Illinois, United States. Located in the Central Time Zone at 40°N latitude.

Sidney has a humid continental climate. Average annual temperature is 53°F, with January lows around 18°F and July highs near 85°F. The city averages 37 inches of precipitation per year. The wettest month is typically May; the driest is February.