It will be a cold Thanksgiving for millions across the Midwest as arctic air from Canada invades the Northern Tier on Wednesday before spreading to the Eastern U.S. in time for Black Friday shopping, ...

More than 84 million are under winter weather bulletins with several states expected to see lows 10 to 25 degrees below normal.

A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

A harsh drop in temperatures is being delivered to the eastern two thirds of the U.S. thanks to a polar vortex dipping down from the Arctic.

Heat-related deaths typically get headlines, but a new study raises concerns about the number and characteristis of people ...

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

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps.

Mild temperatures early this week will give way to a frigid holiday, according to weather experts. Rain will spread across ...

Mostly cloudy, cool and dry Tuesday. Our next weather system will then bring another round of mountain snow along with valley ...

A cold front is moving through this morning and will bring significant changes to our forecast over the next 48 hours.