Green Oaks, in Illinois, United States, is home to roughly 3,800 people in the Central Time Zone at 42.3°N latitude.
In 2025, Green Oaks recorded an average annual temperature of 50°F — about 1.5°F above the 30-year normal of 48°F. The hottest day reached 96°F in June; the coldest was -9°F in February. Total precipitation was 32 inches (drier than usual). The wettest month was June.
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