Winthrop Harbor, in Illinois, United States, is home to roughly 6,800 people in the Central Time Zone at 42.5°N latitude.
Expect a humid continental climate in Winthrop Harbor: average highs of 81°F in midsummer, lows near 16°F in midwinter, and an annual mean of 48°F. Precipitation totals roughly 35 inches per year, concentrated around June, with January typically the driest month.
View historical weather for Winthrop Harbor · More cities in Illinois