Snow and winds are likely to disrupt traffic, trigger flight cancellations, and cause headaches for people traveling to D.C. for Inauguration Day. Baby, it’s cold outside, and it’s about to get even colder for much of the United States.

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans. See maps of the arctic blast.

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the polar regions—here’s how it works

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder Arctic air than last week.

After days of balmy weather City is slated to get hit with snow and then blasted by frigid cold by weekend’s end. Saturday morning started off cloudy and is set to turn soggy by the afternoon. Highs for the day are expected to peak around 45,

A winter storm will drop up to 4 inches of snow on the New York City area Sunday before extreme cold takes over the region next week.