Temperatures in the area will remain in the low 20s for several days, with a small amount of snow accumulation possible Saturday afternoon, said Carl Erickson, an AccuWeather meteorologist.
Rain or snow also is possible Wednesday or Thursday of next week, Erickson said.
The high temperature in Hagerstown Thursday was 22 degrees, according to www.i4weather.net, a Web site maintained by Hagerstown weather observer Greg Keefer.
Roads in Washington County are "in pretty good shape," said Ed Plank, director of the county's highway department. Crews were working to clear roads in hopes that schools could open today, Plank said.
The biggest problem facing travelers was the danger that roads could refreeze, he said.
"As night comes on, even major roads will refreeze," Plank said.
Snow melted on roads Thursday because traffic warmed the asphalt, but low temperatures and sparse traffic overnight meant water on the roads would freeze, he said.