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

CLEVELAND, Ohio — Temperatures today and Saturday will reach the mid-30s in Northeast Ohio. Residents should make a point of enjoying it, because it will seem downright balmy compared to what is coming. On Sunday, highs will be around 20 degrees, according to forecasts from the National Weather Service. Then it gets really cold.

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this weekend.

Parts of Mississippi can expect freezing temperatures, lows in the teens in the coming week. Know how to prep your home, family, pets for the cold.

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.