This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

The coldest air of the early winter season is blasting the eastern U.S. on Monday, with single-digit temperatures with ...

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

The northern U.S. is bracing for bone-chilling cold as a weakened polar vortex pushes Arctic air south. How cold will ...

The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a ...

A fresh shot of Arctic air could bring the coldest air of the season for many this week, according to AccuWeather ...

Another brutally cold weekend is on the way as a piece of the Polar vortex dips out of the Arctic Circle, sending frigid air ...

A polar vortex system is expected to bring two or more cold waves to Florida this week. Temperatures in North Florida could ...

Dr. Amy Butler with the National Oceanic and Atmospheric Administration says the early polar vortex disruption is unusual and ...

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are ...

This coming weekend, the central and eastern United States will receive a blast of Arctic air, which will also affect ...

Weekend weather is expected to drop below freezing over Oklahoma City before warming back up on Monday afternoon.