How come New York City & Newark, NJ have a shorter span between first and last frost than most other places?

Posted By: rainsticks  Posted On: Sep 8th, 2012  Filed Under: Weather

I was looking at average frost dates and I noticed that my area (New York City & Newark, NJ) have a much shorter time between first fall frost and last sprint frost- why is that?

Does that mean our area technically has a shorter winter? 
Does it have something to do with the fact that we are urban, or on the coastline?


  1. TheMaineMan says:

    Yes, and yes.
    The coast tends to modify air temperatures since water takes so long to cool down (or heat up).
    Also, the “urban heat effect” is created by man-made activities (particularly extensive energy use) and also the fact that man-made structures tend to retain more heat than trees, grasslands, etc.
    The result = the big cities tend to have milder winters than their inland, country counterparts.

  2. rainsticks says:

    Oh, thank you for clarifying that for me! It’s a bummer though, I really love winter.

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