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

The colder-than-normal temperatures in Houston are part of a larger pattern of Arctic air sweeping through Texas and much of ...

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...

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

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

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

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

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

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

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

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

A polar vortex is slated to sweep most of the continental United States bringing a hazardous freeze to millions of Americans from the Deep South to the Northeast Saturday going into next week.