Cities across the U.S. are bracing for cold temperatures as a polar vortex arrives, bringing temperatures down to much below ...

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.

A polar vortex could cause light snow over the weekend in. A polar vortex is to blame for freezing temperatures.

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 next week, impacting millions of Americans in nearly all of the contiguous ...

There’s a chance of snow this weekend before temperatures are expected to drop to the single digits next week due to a blast ...

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.