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

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

Several states across the Northeast and into the Midwest are expected to experience unseasonably cold temperatures this ...

A fresh shot of Arctic air could bring the coldest air of the season for many this week, according to AccuWeather ...

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

This coming weekend, the central and eastern United States will receive a blast of Arctic air, which will also affect ...

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are ...

A polar vortex system is expected to bring two or more cold waves to Florida this week. Temperatures in North Florida could ...

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

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

“The polar vortex has been in a weakened and stretched state since late November,” AccuWeather lead long-range meteorologist Paul Pastelok said. “We are seeing the result as Arctic air pushes ...

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