Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

After this weekend's snow storm moves out, cold Arctic air will move in.

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

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.

A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

A prolonged blast of bitter cold is forecasted to firmly lock Toronto in winter’s grasp for the rest of the month, as a polar vortex brings on a deep freeze to the Greater Toronto Area.

Several regions across the eastern US are set to experience early winter with record-low temperatures over the weekend amid a forecast for a powerful polar vortex. During the Arctic blast, the ...

Bitterly cold temperatures have hit the Greater Toronto Area, and while there's a brief reprieve on Wednesday, the chilly ...