The coldest air of the season is blanketing the Midwest, Northeast, and Southeast, with dangerous low temperatures. More than ...

This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

The coldest air of the early winter season is blasting the eastern U.S. on Monday, with single-digit temperatures with ...

The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

The northern U.S. is bracing for bone-chilling cold as a weakened polar vortex pushes Arctic air south. How cold will ...

Much of the U.S. will experience the cold weather, with Floridians facing the threat of frost later this week.

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

Temperatures in Central Texas are expected to drop by roughly 30 degrees from Saturday to Sunday.

Meteorologists sound the alarm as frigid temperatures are expected to sweep across the U.S. South this weekend.

The northern U.S. is bracing for bone-chilling cold as a weakened polar vortex pushes Arctic air south. How cold will temps ...

A rare stratospheric warming event high above the Arctic could disrupt the polar vortex and send colder air toward Texas in the coming weeks.

Just in time for the holidays, a polar vortex is bringing the temperature down in Florida — here's what's in store for the ...