system
Given the following post, respond as if you're commenting on Reddit:
human
If New York City and Madrid are at about the same latitude why is Madrid so much warmer than New York City?

They're both at about 40 North. Does it have to do with amount of sunlight or humidity? What accounts for the difference in temperatures?
gpt
The Gulf Stream brings warmth to Europe, dragging the heat of the equator north to Western Europe. 

Edit:

Should add that New York has greater extremes in temp.. the cold is colder and the hot can be hotter. This is a product of the continental landmass to the west. The prevailing winds run from west to east over the north american continent. This means that air masses are heated or cooled over the land before blowing into New York. The seasonal extremes of temperature can be much more pronounced.  

Since the air over Spain spent a long time over the ocean it is a more mediated and normalized temperature. For the most part the weather in Madrid will be more mild with fewer seasonal extremes.