Dorchester, in Massachusetts, United States, is home to roughly 97,800 people in the Eastern Time Zone at 42.3°N latitude.
In 2025, Dorchester averaged an annual temperature of 51°F, with hottest temperatures reaching 102°F in June and lowest around 5°F in January. The city received approximately 42 inches of precipitation during the year.
View historical weather for Dorchester · More cities in Massachusetts