BALTIMORE, Md. — Overnight temperatures are expected to run warmer than usual for many neighborhoods Wednesday night, but sub-freezing readings will persist in the western Alleghenies into Thursday morning, according to the National Weather Service Baltimore/Washington office.
The agency said in a Wednesday update that lows should generally fall in the 30s to 40s across most of the region, while winds continue to gradually decrease through the day. The temperature outlook is valid from Wednesday at 7 p.m. through Thursday at 9 a.m. EST, the office said.
Forecast lows shown in the weather service graphic include about 38 in Washington and 37 in Baltimore, with nearby communities also expected to stay above freezing. Readings were shown near 40 in Frederick, 39 around La Plata, and 35 near Leesburg and Winchester, with 36 around Warrenton.
Farther west and north, colder air is expected to hold on. The map indicated lows near 32 in Cumberland, Hagerstown, Westminster and Elkton, while the higher terrain turns colder. Oakland in far western Maryland was shown near 24, underscoring the weather service’s note that sub-freezing temperatures remain likely in the western Alleghenies.
In Virginia, the graphic showed lows near 42 in Charlottesville, 39 in Staunton, and 40 near Harrisonburg, with 35 in Luray.
For early-morning commuters, the temperature split could be noticeable over short distances, especially for drivers crossing higher elevations where patches of frost may be more likely if skies clear. With winds expected to ease, the night may feel less blustery than earlier in the day, but colder pockets in the mountains could still impact outdoor workers and students at bus stops Thursday morning.
The National Weather Service urged residents to monitor local forecasts for neighborhood-level temperature changes overnight.
