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.

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.