Williamsville is a city of approximately 5,300 people in New York, United States. Located in the Eastern Time Zone at 43°N latitude.
In 2025, Williamsville recorded an average annual temperature of 49°F — right at the 30-year normal of 49°F. The hottest day reached 91°F in August; the coldest was -9°F in January. Total precipitation was 37 inches (drier than usual). Snowfall totaled 19 inches, below the 95-inch average. The wettest month was May.
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