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

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

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

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

"Arctic air will bring near record cold temperatures and dangerous wind chills," the National Weather Service said.

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

Cold temperatures are set to continue into the weekend, but New England will feel another icy blast of Arctic air Sunday ...

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

It is forecasted to be cold in the Bay State as a result of the breaking, or "displacement" of the polar vortex. According to ...

Another round of bone-chilling air from the Polar Vortex is expected to invade the central and northeastern U.S. this weekend ...

The polar vortex can commonly be disrupted during the winter and is known to cause an Arctic outbreak in the United States.

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