The National Weather Service in Cleveland has issued a frost advisory in effect from 2-8 a.m. Tuesday.
Temperatures will drop into the mid 30s Monday night as light winds and clear skies move into Ohio and Pennsylvania. Areas of frost will be possible for several hours late tonight as a result of these conditions.
Some of the protected and low-lying locations across inland northwest Pennsylvania may see temperatures drop into the lower 30s for a brief time around daybreak.
A frost advisory is issued when frost is expected to develop during the growing season. Those with agricultural interests in the warned area are advised to harvest or protect tender vegetation.
Also potted plants normally left outdoors should be covered or brought inside away from the cold.