A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the ...

The blast of frigid temperatures follows days of snowy, icy conditions across much of the country. It's bringing the coldest ...

Saranac Lake, N.Y., in the Adirondacks was the coldest place in the United States on Friday, recording a low of minus 22 ...

Tens of millions of Americans are under winter storm warnings as a "major" system is dumping snow and delaying flights.

The next arctic blast could drop high and low temperatures into record territory across the Midwest and Great Lakes. The ...

Black ice, snow showers and fog are pestering post-holiday travelers in the Midwest, while the Northeast is gearing up for ...

The active December winter weather pattern continues across the United States. The Northern Tier will remain the primary ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

Chicago O'Hare International Airport is the most impacted airport by far, with over 700 cancellations and over 500 delays as ...

Midwest braces for frigid temperatures, significantly below normal for the season. Earlier this week, the states in the ...

More than 1,100 flights were canceled at Chicago airports as the storm disrupted travel for those headed home after ...

Forecasters have said parts of the U.S. can expect frigid temperatures in December. A first round has arrived, and more cold ...