With a population of around 18,000, Cary sits in Illinois, United States. The city operates in the Central Time Zone.
In 2025, Cary recorded an average annual temperature of 50°F — about 1.1°F below the 30-year normal of 51°F. The hottest day reached 94°F in June; the coldest was -11°F in February. Total precipitation was 34 inches (near normal). The wettest month was July.
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