It is now likely that the coldest period of sustained cold weather is behind us after gripping the Eastern U.S. for the first part of December. Warmer temperatures are expected for Christmas and into ...

Boston has seen just one day so far this month where the average temperature was above the seasonal norm, daring me to ask — are you over the cold yet? Astronomical winter hasn’t even arrived (that ...

Another round of bone-chilling air from the polar vortex could invade the central and northeastern US this weekend and potentially produce the first significant snowstorm of the season for the ...

Ready for some serious cold? The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said Weather Trader ...

A polar vortex is sending Arctic air deep into the United States this week, bringing record-low temperatures to the Midwest and Northeast. From Chicago to New York, forecasters warn of subzero ...

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...

The wall that keeps cold air contained in the Arctic is called the polar vortex. There's been a "displacement" in the polar vortex, which allows Arctic air to escape to the south. An "arctic frontal ...

Just a few days into December, an arctic air mass has swept into the United States, bringing subzero morning lows and daytime highs stuck in the teens for 30 million Americans in the Northern Plains, ...

The polar vortex is so back, and in some parts of the country, the weather system will bring with it up to a foot of snow. If “polar vortex” is giving you déjà vu, that’s because we’ve heard it before ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

If you’ve ever wondered why winter sometimes flips from mild to brutally cold, the answer might be hiding 20 miles above your head. That’s where a rare atmospheric phenomenon called sudden ...