A Frost Advisory is in effect from 2 a.m. to 9 a.m. EDT Thursday for parts of Ohio, Pennsylvania and West Virginia, including the Pittsburgh metro area.
NWS Pittsburgh and NWS Charleston, WV issued the advisories Wednesday around noon.
Temperatures as low as 34 degrees will result in frost formation.
Sensitive outdoor plants may be killed if left uncovered.
Pittsburgh, Eastern Ohio and Northern West Virginia
The NWS Pittsburgh advisory covers east central Ohio, southwest and western Pennsylvania, and northern West Virginia, including the northern panhandle.
Ohio: Tuscarawas, Carroll, Columbiana, Coshocton, Harrison, Jefferson, Muskingum, Guernsey, Belmont, Noble and Monroe.
Pennsylvania: Beaver, Allegheny, Washington, Greene, Westmoreland and Fayette.
West Virginia: Hancock, Brooke, Ohio, Marshall, Wetzel, Marion and Monongalia, plus the ridges of eastern Monongalia and northwestern Preston.
Cities include Pittsburgh, Wheeling, Morgantown, Steubenville, Weirton, Uniontown, Washington and Zanesville.
Southeast Ohio and Central West Virginia
The NWS Charleston advisory covers southeast Ohio and central and northern West Virginia.
Ohio: Perry, Morgan, Athens, Washington, Vinton and Meigs.
West Virginia: Jackson, Wood, Pleasants, Tyler, Roane, Wirt, Calhoun, Ritchie, Doddridge, Clay, Braxton, Gilmer, Lewis, Harrison and Taylor.
Cities include Parkersburg, Clarksburg, Marietta, Grafton, Weston and Sutton.
Source: NWS Charleston, WV on X
What Comes Next
Dry weather continues. NWS Pittsburgh expects dry, seasonable temperatures through the week and into the weekend.
NWS Charleston expects chilly mornings and dry, seasonable days through early next week, with patchy river valley fog.
How to Protect Plants
Take steps now to protect tender plants from the cold.
Cover sensitive plants before sunset, and bring potted plants indoors if you can.
Local forecasts and alerts: NWS Pittsburgh and NWS Charleston, WV.
