Houston has been experiencing below-average temperatures as a polar vortex ushers in cooler conditions across the state.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

As the West Coast braces for fiery winds and the Northeast shivers under a polar vortex, the nation finds itself caught between two extreme weather fronts.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

A winter storm that is expected to begin in Texas next week could end up bringing snow and ice to parts of Florida.

As a slug of polar vortex-fueled arctic air overtakes the eastern two-thirds of the U.S. next week, a storm system could ...

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

DALLAS - Most of the nation is in good shape on Wednesday and will be warmer on Thursday. The arctic air is coming, but not ...

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

The unseasonable chill that has swept through the eastern half of the US defies last year's mild winters and the South's ...

The polar vortex will soon elongate over North America with a dangerous cold moving into sections of Canada and the U.S.