Bitter temperatures are forecast to hit swathes of the U.S. this weekend as a polar vortex—the area of cold air that ...

The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...

Maps produced by Pivotal Weather show that wind chills will make it feel considerably below freezing across every county in New York on Sunday. Hamilton County will feel the coldest, with chills ...