The advisory, which is in effect from 2 a.m. until 9 a.m. Tuesday, includes Northern Westchester, Putnam, Rockland, Dutchess and Orange counties.
The entire region will see the coldest evening of the season, with overnight temperatures dipping to the mid- to low-30s
A frost advisory means widespread frost is expected and sensitive outdoor plants may be killed if left uncovered.
After areas of frost through 9 a.m. Tuesday in some spots in the Hudson Valley, temperatures will climb to near 60 under mostly sunny skies.
Monday's high temperature will only reach the upper-50s, with winds gusting up to 14 mph at night, making it feel much colder.
Morning clouds will be followed by partly sunny skies Monday.
Click here to follow Daily Voice White Plains and receive free news updates.