Arctic air moved south, into the area starting late last week and has lingering since. This has lead to dangerously cold ...

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

Most of the current cold snap, which swept in a few days ago, should have passed, but temperatures remain dangerously low.

President-elect Donald Trump's second inauguration will mark the coldest presidential ceremony in more than 40 years.

More than 400 flights were delayed or canceled at Denver International Airport on Monday as a polar vortex continued to ...

In Indiana, around zero degrees was likely, the map showed, with temperatures of around three degrees possible in Northern ...

Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.

A rare winter storm is getting set to slam the Gulf Coast and South, with cities from Texas to Florida under Winter Storm Warnings.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

Marylanders are bracing for the upcoming polar vortex, expected to bring temperatures into the single digits early this week.