The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

Meteorologist Zack Webster shows how tropical development winds down as the hurricane season crosses into November.

Summer is over and, although a slight rise in temperatures is expected at the end of September, in what is known as the 'Indian summer', experts agree that the cold is getting clos ...

Frost advisories were issued in parts of the Great Lakes region, New York, and New England as temperatures dropped. A strong polar vortex typically keeps the coldest air locked near the North Pole, ...

Saranac Lake recorded the coldest temperature in the continental U.S. this morning, dropping to 23°F. In contrast, the warmest temperature for the day was 101 at Rio Grande Village in Texas, according ...

The polar vortex is stirring up and bringing the earliest signs of changing weather. Here's when and what to know about the ...

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?

Scientists have captured rare insights into Mars’s north polar vortex, where temperatures plunge far below those outside its boundaries and darkness triggers an unusual surge in ozone. New observation ...

Something strange is happening in the frozen skies above Mars’s North Pole. Deep in the planet’s endless winter darkness, ...