Willowbrook, in Illinois, United States, is home to roughly 2,100 people in the Central Time Zone at 41.5°N latitude.
Willowbrook has a humid continental climate. Average annual temperature is 52°F, with January lows around 19°F and July highs near 85°F. The city averages 34 inches of precipitation per year. The wettest month is typically May; the driest is February.
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