More dangerously cold air is on the way for much of the U.S. Will Tennessee be impacted? Here's what to know.

During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

There's a confounding dilemma for many folks trying to make sense of winter weather in the context of climate change.

Florida has endured a winter few could have predicted. Since early November, the state has endured at least three rounds of Arctic air, and even snow.

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.

Windchill temperatures as low as minus 30 degrees are a risk to life, forecasters said.

Intense cold is settling in over the northeastern United States after winter storms brought snow and ice. Will the bitter ...

Michigan are bracing for the coldest weekend of winter as Arctic air plunges south.

New York is bracing for the coldest air of the winter this weekend, with snow. Learn how the polar vortex is involved.

This winter’s harsh run in the East is intensifying, with some of the coldest air so far this season plunging into Vermont this weekend.

A cold weather advisory with wind chills as low as -15 degrees is in effect until noon on Feb. 7 after a passing winter storm ...

A polar vortex is bringing frigid temperatures and dangerous wind chills as low as minus 10 degrees to Delaware this weekend.