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.

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

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

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

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.

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 City got its first snow of the season on Tuesday as a powerful polar vortex swept across the eastern half of the country, bringing frigid temperatures. Highs are not expected to break out of ...

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, ...

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 ...

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 ...