Expected snowfall totals in the NY metropolitan area are as follows... Upwards of 6" in the NYC Metro area and much of Long Island (though lesser amounts along the east end of Long Island), Just north & west of New York City, 4"-8" with higher amounts towards northern Orange and Putnam counties and into northern Connecticut, southern Massachusetts, and Rhode Island. Up to a foot or more is possible in much of Pennsylvania, and into New Hampshire & Maine.
Conditions turn try for most areas late Sunday and could see a bit of sunshine as well, especially throughout Monday, both quite windy days.
***It is highly recommended that you do not travel this evening unless absolutely necessary and be extremely cautious if you must as weather like this can prove to be very hazardous to the roadways.***