With a population of around 9,700, Southborough sits in Massachusetts, United States. The city operates in the Eastern Time Zone.
In 2025, Southborough recorded an average annual temperature of 50°F — about 1.9°F above the 30-year normal of 48°F. The hottest day reached 97°F in June; the coldest was -1°F in January. Total precipitation was 41 inches (drier than usual). Snowfall totaled 11 inches, below the 73-inch average. The wettest month was May.
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