About Nantucket, MA's Climate & Weather History

Nantucket is a city of approximately 7,400 people in Massachusetts, United States. Located in the Eastern Time Zone at 41.3°N latitude.

In 2025, Nantucket recorded an average annual temperature of 51°F — about 0.6°F above the 30-year normal of 51°F. The hottest day reached 75°F in July; the coldest was 19°F in March. Total precipitation was 34 inches (drier than usual). The wettest month was October.