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

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

While significant weather changes are approaching Michigan, most of the Lower Peninsula will see relatively modest snow ...

Arctic air will settle over Michigan this week, bringing several days of sub-freezing temperatures and a renewed threat of ...

Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

A weakened polar vortex is pushing frigid Arctic air into the central and eastern United States. Michigan will experience its coldest temperatures over the weekend, with some areas dipping below zero.

A potential wobble in the polar vortex could bring a return of arctic air to Ohio and the northern U.S. around Thanksgiving. Forecasts show below-average temperatures for about half the country ...

A potential wobble in the polar vortex could bring frigid Arctic air to the northern U.S. around Thanksgiving. Forecasts show below-average temperatures for about half the country, while the Southeast ...

Cold Arctic air now covers most of the UK, with temperatures well below average, widespread frost and ice and an increasing ...