"Bitter cold could linger through the end of the month," the Weather Prediction Center said in an update on Monday.

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

A crippling winter storm that could paralyze parts of the Southern and Central U.S. this weekend, and some of the effects ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

Environment Canada has issued weather warnings for most of Canada over a 'high or moderate impact level' cold blast that is ...

An Arctic air mass moving across North America is causing extreme cold in Western Canada, which will continue into the ...

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.