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

Here’s the wind chill chart. Notice the four shadings, indicating how long it will take for frostbite. When we get to wind ...

Winter has settled in for the long haul, and the next few days only reinforce that feeling. Tonight brings mostly cloudy ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

And it won’t just feel cold: A series of clipper storms is also expected to bring snow to the region beginning on the evening ...

The displaced polar vortex will bring prolonged periods of cold to the eastern portion of the Lower 48 through the end of ...

A major polar vortex is about to impact the United States — and it could usher in weeks of frigid temperatures for millions of people, even bringing snow to Florida.

A major polar vortex is about to hit the US and could bring weeks of frigid temperatures for millions, with even a chance of ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.