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.

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and ...

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

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

The polar vortex is weakening, and pockets of cold air are expected to break off and travel south into the United States — with some Arctic air expected to encroach on New England after Thanksgiving, ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

Frigid temperatures are expected to impact much of the central and eastern United States in the coming weeks. The first of three polar vortex systems is expected this month, according to AccuWeather.

New York could be hit by another blast of Arctic air just in time for Thanksgiving as forecast models predict that a possible wobble in the polar vortex could push freezing air into the northern half ...

Our first true shot of winter arrives late Sunday and spills into the first half of next week. I’m not talking about snow. Instead, a shot of Arctic air will plunge south into the United States from ...