As the polar vortex begins to stir, subtle clues point to the coming seasonal shift. So, when will freezing temperatures ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing with the new fall season. When is the first frost in Tennessee?

According to climate scientists, record levels of Arctic ice in 2025 could increase cold spells in the United States and ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. When will Wisconsin see its first ...

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it ...

Temperatures are staying relatively warm throughout Illinois this week, despite fall officially starting Sept. 21. But ...

La Niña is expected to return this winter—and that could reshape the season across the United States. With a 71% chance of ...

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...

The polar vortex is beginning to stir, signaling the first signs of seasonal change. Here's when to expect the first frost in New Hampshire.

It's already a lot to endure frigid winter conditions, but what happens when we get an unwelcome visit from an even colder spell of air like a polar vortex? "A polar vortex is simply that: a vortex ...

Persistent blasts of Arctic air have been keeping it bitter cold. — -- Once again the relentless stretch of bitter cold battering Northeastern cities including Boston with record snow has many ...