Why Is It Usually Warmer In New York City Than In Rural New Jersey Just a Short Distance Away?

Is it usually warmer in New York City than in rural New Jersey because cities tend to be warmer than the surrounding countryside.

This is known as the urban heat island phenomenon.

Cities are warmer in summer and winter because they are full of concrete and asphalt, which retain heat better than soil and fields.

Also, heat escapes from apartment and office buildings and warms the outside air.