A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this weekend and next week.

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...

People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

Severely cold winter weather is set to hit Knoxville, prompting warming shelters to open starting the night of Jan. 19.

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

A chunk of the polar vortex, a circular ribbon of air that flows near the North Pole, will dip into the U.S. next week.

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Here is what is and isn't a polar vortex when Colorado receives cold like what is forecast for the holiday weekend.

The NYC area could see significant snow this weekend for the first time in years, with "the potential for up to 6 inches." ...

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...