The season's first frost advisory is in effect for Western Passaic and Rockland counties.
The advisory is in effect from 2 a.m. until 9 a.m. Tuesday.
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.
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