About Lake Barrington, IL

With a population of around 5,000, Lake Barrington sits in Illinois, United States. The city operates in the Central Time Zone.

Expect a humid continental climate in Lake Barrington: average highs of 84°F in midsummer, lows near 18°F in midwinter, and an annual mean of 51°F. Precipitation totals roughly 32 inches per year, concentrated around June, with February typically the driest month.