Query: What month in New York City is the coldest?
Context: Under the Köppen climate classification, using the 0 °C (32 °F) coldest month (January) isotherm, New York City itself experiences a humid subtropical climate (Cfa) and is thus the northernmost major city on the North American continent with this categorization. The suburbs to the immediate north and west lie in the transition zone from a humid subtropical (Cfa) to a humid continental climate (Dfa).