The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

If you hear that the polar vortex is coming, you should expect to experience a lot of cold. CLEVELAND — The temperature ...

The first of three expected polar vortex systems is predicted to bring frigid temperatures. Here's what is expected in South ...

A polar vortex may be headed our way later this month. The phenomenon is a low-pressure buildup of cold air that swirls around the polar regions of the Earth. As it expands in the winter, it can send ...

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to expect in Tennessee.

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

Temperatures across Indiana are set to be even colder tonight, as temperatures plunge into single digits and at the zero mark, with wind chills dipping well below zero.

The polar vortex is on the move with its Arctic blasts, but so are storms packing snow and ice. The weather pattern setting ...

The United States is expected to experience a prolonged winter season marked by chilly winds, snow and shivers.

That cold air mass also will move eastward but Florida below the panhandle will largely remain unaffected.

Storms, some of which may bring snow, are expected to accompany a push of colder air this week, and the next storm is ...