Relatively milder but still colder-than-normal highs in the mid-30s are forecast Monday before another blast of frigid air moves over the region for the middle of the week.
Early morning lows reached the upper 20s, with temperatures reaching the lower 40s by mid-morning.
Winds were expected to become blustery and gusty, at 15-25 mph, by midday, dropping wind chills into the teens and then to the single digits by the evening.
Mostly cloudy skies are forecast throughout the day.
Single-digit lows are forecast Monday night, expected to drop to about 4 degrees at Baltimore-Washington International Thurgood Marshall Airport and 9 degrees in downtown Baltimore. A cold northwesterly wind of 15-25 mph could make it feel as cold as 10 degrees below zero.
A wind chill advisory was set to go into effect from 1 a.m. to 10 a.m. Tuesday, with wind chills of 5 below zero to 10 below zero.
Sub-zero and single-digit wind chills are forecast to last through Tuesday, with highs in the upper teens and lows around 10 degrees. Mostly cloudy skies are expected through the middle of the week.
Winds are forecast to calm by Wednesday, but the cold air will remain, with highs in the lower 20s and lows in the lower teens.
Temperatures could rise above freezing again, if briefly, Thursday and Friday, with highs in the lower 30s and upper 30s, respectively.