Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...

The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...

A polar day is when the sun does not set and stays above the horizon for an extended period, while a polar night is when the ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and sends temperatures tumbling to levels not seen ...

The weather flow is gradually changing now and as we head into early February. Our storm systems will come from the west and ...

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A polar day is when the sun does not set and stays ... J ennifer Gray is a weather and climate writer for weather.com. She has been covering some of the world's biggest weather and climate ...