Boston officially the City of Boston, is the capital and most populous city in the Commonwealth of Massachusetts in the United States.
It serves as the cultural and financial center of the New England region of the Northeastern United States. The city has an area of 48.4 sq mi (125 km2) and a population of 675,647 as of 2020.
Under the Köppen climate classification, Boston has either a hot-summer humid continental climate (Köppen Dfa) under the 0 °C (32.0 °F) isotherm or a humid subtropical climate (Köppen Cfa) under the −3 °C (26.6 °F) isotherm.
Summers are warm to hot and humid, while winters are cold and stormy, with occasional periods of heavy snow. Spring and fall are usually cool to mild, with varying conditions dependent on wind direction and jet stream positioning.
Prevailing wind patterns that blow offshore minimize the influence of the Atlantic Ocean. However, in winter areas near the immediate coast will often see more rain than snow as warm air is sometimes drawn off the Atlantic.
The city lies at the transition between USDA plant hardiness zones 6b (away from the coastline) and 7a (close to the coastline).

