Roselle is a city of approximately 23,000 people in Illinois, United States. Located in the Central Time Zone at 42°N latitude.
In 2025, Roselle recorded an average annual temperature of 50°F — right at the 30-year normal of 51°F. The hottest day reached 95°F in June; the coldest was -9°F in February. Total precipitation was 34 inches (wetter than usual). The wettest month was June.
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