It looks like Gabreski Airport in Westhampton got down to 18 degrees about 10-11P.M. but then the wind picked up a little and the temperature rose to the 20s.
Most local reports I saw on the Davis weatherlink in my area were in the low 20s. There was no wind last night so temps. will be quite a bit higher in more urban settings. I have a decent size back yard and my temperature reading is not near concrete or houses.
It looks as though the 1990s were an exceptionally warm decade as the 2000s were colder than the 1990s as far as winter goes. This could slow the 30 year average winter gain in temperature when they calculate the 2030 new figures.
It was beautiful here early this afternoon. Then the wind started howling. This is what long Island gets in spring, strong southerly winds off the ocean to turn beautiful spring days into a gale force chill.