A fresh shot of Arctic air could bring the coldest air of the season for many this week, according to AccuWeather ...

This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

Winter isn't just knocking anymore. It's kicked the door wide open and brought the polar vortex along for the ride. If you've ...

The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a ...

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

Feeling that sudden chill? A triple polar vortex is sweeping across parts of the U.S. Here’s what that means — and where it’s ...

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

Most of Virginia is expected to receive 1-4 inches of snow on Monday, just three days after a similar snowfall covered all ...

According to a forecast map shared by the agency, the states with the highest probability of seeing below average ...

The central and eastern United States are bracing for an extraordinary cold snap just ahead of Christmas, according to a ...

The polar vortex is weakening, and pockets of cold air are expected to break off and travel south into the United States — with some Arctic air expected to encroach on New England after Thanksgiving, ...

Meteorologists are predicting cold air to sweep across much of the United States in the week following Thanksgiving. That'll mean below-normal temperatures for a lot of areas. But lucky for ...