Holliston is a city of approximately 14,000 people in Massachusetts, United States. Located in the Eastern Time Zone at 42.2°N latitude.
In 2025, Holliston recorded an average annual temperature of 50°F. The hottest temperatures reached 96°F in June; the coolest were 2°F in January. Total precipitation for the year was 42 inches, with the wettest month being May. Snowfall for the year totaled approximately 10 inches.
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