Forecasters have said parts of the U.S. can expect frigid temperatures in December. A first round has arrived, and more cold ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

Frigid Arctic air is pushing south into the United States, and fortunately, it doesn't look like freezing temperatures will ...

Several inches of snow are expected to fall on Dec. 2 in the Northeast and Mid-Atlantic, with freezing rain and iced-over ...

More than 18 million people across the West and Midwest are under winter weather alerts in the United States.

Around 19 million people across the West and Midwest are under winter alerts as heavy snow and strong winds sweep through the regions ...

Bitter cold is taking hold across the U.S. on Thursday, with millions waking up to freezing temperatures and in some areas, ...

A rare weather phenomenon that hasn't occurred since 1968 could soon impact the U.S., plummeting temperatures nationwide.

By Steve Gorman Dec 5 (Reuters) - A blast of Arctic air gripped much of the central and eastern portions of the U.S. on ...

A severe thunderstorm warning was issued for Brevard and Osceola Counties just before 8 p.m.

Traveling to your Thanksgiving destination may be smoother than heading home, with a cross-country storm potentially bringing ...

A late-November cold snap sent temperatures in Minneapolis so low that, for a short time, it was actually colder than Mars, ...