A Winter Weather Advisory is in effect for parts of the D.C. region, with freezing rain and sleet expected.
The advisory covers higher elevations in parts of Warren, Frederick, Loudoun, Clarke and northern Fauquier counties in Virginia and several counties in West Virginia.
The warnings also extend down the I-81 corridor, to Harrisburg and Charlottesville, Va.
In these areas, ice could accumulate, from a trace to one-tenth inch, at elevations above 700 feet, the National Weather Service said.
Roads could be slippery and bridges and overpasses could freeze, StormTeam4 meteorologists said.
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