New York City, which was forecast to get up to 5 inches (13 centimeters), suspended some parking rules to facilitate snow removal.
Flight delays were reported in Philadelphia, Newark and New York.
In Connecticut, Rhode Island and Massachusetts, meteorologists predicted the snow would taper off around the time commuters headed home for the day, but roads and sidewalks were expected to remain slick.
Outside Washington, traffic was light Tuesday morning. With temperatures hovering around freezing, highways that had been plowed and treated were passable, but conditions began to deteriorate after 8 a.m. as the pace of the snowfall increased.
The usually bustling Springfield Metro station was nearly deserted. Those who did have to work said the lack of traffic made the slushy roads easier to navigate.
"I wish it was like this all the time minus the snow," said Maelin Traylor, 28. "The traffic was wonderful."
Forecasters said more wintry weather could be on the way for the region this weekend.