Well, December in New York City is not so bad, really. It gets bitter cold in January and especially February, but December s not bad at all. In fact, yes, it will be much like it was when you went in November last time, a little colder, perhaps, but not too bad.Good luck, and the link below is to a fun slideshow webpage about Winter Fashions In New York City from the N.Y. Times website...
Does it have a (permanent or detachable) hood?I suspect you will be out to see the Rockefeller Tree and without a hood, your face may get cold from the night breeze.Here is a guide to dress from head to toe.http://www.youtube.com/watch?v=ETu6knFPr��