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 ...

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.

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

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 ...

The polar vortex is set to bring a winter storm to parts of Mississippi with ice, snow. But extreme cold will last for days.

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