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

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

Snow and winds are likely to disrupt traffic, trigger flight cancellations, and cause headaches for people traveling to D.C.

A potent surge of Arctic air starts settling in Monday evening as a massive dip in the jet stream pulls in frigid air across ...

Major winter storm brings heavy snow to East Coast as Arctic blast puts millions under warnings from Plains to Maine ...

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Any sort of wind along with the bitter cold will make for frostbite in as little as 15 to 20 minutes in the incoming arctic ...

Perfect time to hop on a plane and go somewhere south,” FOX Weather Meteorologist Britta Merwin said. “Like, really, really far south.” ...