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

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from coastal Texas to northern Florida late Monday into Tuesday. The event comes as an Arctic blast affects more than half the U.

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.

DALLAS (AP) — An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some other parts of the U.S. hit by the plunging polar vortex ...

An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some other parts of the U.S. hit by the plunging polar vortex this week began ...

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 of ultra-cold air usually spins around ... store as he loaded his fourth order of the day into his car. Texas Gov. Greg Abbott said Wednesday that the state had deployed several ...

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

when freezing temperatures in Texas lasted more than eight days, causing widespread power outages and killing more than 200 people. Regardless of whether the polar vortex contributes to a specific ...

Unprecedented snowfall hits the U.S. South. Discover how this winter storm is setting new records and causing rare blizzard conditions.

Louisiana isn’t known for extreme cold weather—but that changed Tuesday, when the National Weather Service issued its first ever blizzard warning for much of the state.