With a population of around 13,900, Olean sits in New York, United States. The city operates in the Eastern Time Zone.
In 2025, Olean recorded an average annual temperature of 46°F — right at the 30-year normal of 46°F. The hottest day reached 89°F in June; the coldest was -19°F in January. Total precipitation was 42 inches (near normal). The wettest month was May.
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