East Setauket is a city of approximately 17,000 people in New York, United States. Located in the Eastern Time Zone at 40.9°N latitude.
In 2025, East Setauket recorded an average annual temperature of 54°F — about 0.9°F above the 30-year normal of 53°F. The hottest day reached 101°F in June; the coldest was 11°F in January. Total precipitation was 41 inches (drier than usual). Snowfall totaled 8 inches, below the 32-inch average. The wettest month was May.
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