Cold
The weather / temperature at Christmas time is different ever year.
Cold and snowy
In 1998 and 2002, there was a mild snowfall in New York on Christmas. For the most part, New York does not get snow on Christmas.
It would be snowy probably not very much on the ground though and it would be at least between -5 to -15 out.
the new york tree in time square
Hang Time - 1995 Christmas in New York 4-25 was released on: USA: 5 December 1998
One can find information about New York weather by watching the Weather Channel on TV. If one has a smartphone, there is a weather app available for information about New York weather.
like a winter wonderland in Illinois.it is usually hot or warm like a summer or spring day.In Florida it is usually in the 60's or 70's usually in the 70's. i do not know about new york.
The Rockefeller Center Christmas Tree is certainly one of the main symbols of Christmas in New York City.
In 1882 Edward Johnson from New York City lit up a Christmas tree with electric Christmas lights for the first time.
One can watch the Weather Channel on television to find New York City weather. Most smartphones have an app which one could use to find the New York City weather.