About Third Lake, IL

Third Lake, in Illinois, United States, is home to roughly 1,200 people in the Central Time Zone at 42.4°N latitude.

Third Lake has a humid continental climate. Average annual temperature is 48°F, with January lows around 16°F and July highs near 81°F. The city averages 35 inches of precipitation per year. The wettest month is typically June; the driest is January.