New Haven lies in the transition between a humid continental climate (Köppen climate classification: Dfa) and humid subtropical climate (Köppen Cfa), but having more characteristics of the former, as is typical of much of the New York metropolitan area. Summers are humid and warm, with temperatures exceeding 90 °F (32 °C) on 7–8 days per year. Winters are cold with moderate snowfall interspersed with rainfall and occasionally mixed precipitation. The weather patterns that affect New Haven result from a primarily offshore direction, thus reducing the marine influence of Long Island Sound—although, like other marine areas, differences in temperature between areas right along the coastline and areas a mile or two inland can be large at times.

Though harboring transitive properties, what Koppen climate classification does the New Haven climate more closely characterize?