Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the North Pole. Real feel temperatures throughout the northeast, including ...

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march across the eastern U.S.

Winter is supposed to be cold—and indeed, in the absence of global warming, the season would be colder than it typically has been in the U.S. in recent years. Nevertheless, when freezing temperatures ...