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

Another polar vortex is expected to bring subzero temperatures that will affect more than 40 million Americans in the coming ...

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

PITTSBURGH — January was a mild one for Pittsburgh, with the monthly temperature almost two degrees above average. Snowfall finished a half an inch above average. Back in mid-January, we told you how ...