Hanover is a city of approximately 16,900 people in Massachusetts, United States. Located in the Eastern Time Zone at 42.1°N latitude.
In 2025, Hanover recorded an average annual temperature of 51°F — about 0.7°F above the 30-year normal of 50°F. The hottest day reached 101°F in June; the coldest was 5°F in January. Total precipitation was 45 inches (drier than usual). The wettest month was May.
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