More than 170 million people across the United States, from the Mexican border to the Canadian border are under cold weather ...

Precip may start as rain, but as temps fall to the freezing mark after sunset Monday, a transition to freezing rain and sleet ...

The coldest air of the winter is arriving over the next couple of days, and it could bring light wintry precipitation along with it.

The Transportation Department is stepping up enforcement of persistent flight delays with a lawsuit against Southwest Airlines and a fine against Frontier Airlines. The agency said the U.S ...