New York Has No Melting Point—It's a City, Not a Substance

Melting point is a physical property of pure substances (elements, compounds)—the temperature at which solid turns to liquid. New York is a city and a state, composed of countless materials (concrete, steel, asphalt, water, organic matter, human beings) each with its own melting point.

The question likely confuses "melting point" with climate data (average temperatures, heat index) or asphalt softening temperature (~50–60°C / 120–140°F, relevant for pavement engineering). In a metaphorical sense, one might say New York "melts" in a July heatwave or during a financial crisis—but scientifically, the concept does not apply.