Greenfield, in Massachusetts, United States, is home to roughly 19,800 people in the Eastern Time Zone at 42.6°N latitude.
In 2025, Greenfield recorded an average annual temperature of 48°F — right at the 30-year normal of 48°F. The hottest day reached 93°F in June; the coldest was -11°F in January. Total precipitation was 48 inches (wetter than usual). The wettest month was May.
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