East Haddam is a city of approximately 9,000 people in Connecticut, United States. Located in the Eastern Time Zone at 41.5°N latitude.
In 2025, East Haddam recorded an average annual temperature of 51°F — right at the 30-year normal of 51°F. The hottest day reached 99°F in June; the coldest was -1°F in January. Total precipitation was 47 inches (near normal). The wettest month was May.
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