With a population of around 16,600, Grafton sits in Massachusetts, United States. The city operates in the Eastern Time Zone.
Grafton has a humid continental climate. Average annual temperature is 48°F, with January lows around 17°F and July highs near 80°F. The city averages 48 inches of precipitation and 73 inches of snow per year. The wettest month is typically October; the driest is February.
View historical weather for Grafton · More cities in Massachusetts