Boston's climate is classified as humid continental, which, simply put, means weather varies widely. But you can count on a good amount of rain and an equally good amount of snow, about 42 inches of each in a typical year.
Spring and fall temperatures are often pleasant, with average highs in the 50s and 60s. Fog frequently makes an appearance, especially in spring.
Winters can be cold and snowy, with average lows in the 20s in January.
Summers are humid, but not unduly hot with average highs in the low 80s; summer thunderstorms with accompanying hail are not uncommon. Because of its coastal location, tropical storms and hurricanes sometimes hit the region, particularly in the late summer and early fall.