Winter storm warnings are in place in several states with heavy snow, freezing rain and dangerously cold temperatures ...

The Current Temperature map shows the current temperatures color ... In most of the world (except for the United States, Jamaica, and a few other countries), the degree Celsius scale is used ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

As the West Coast braces for fiery winds and the Northeast shivers under a polar vortex, the nation finds itself caught between two extreme weather fronts.

Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...

A powerful polar vortex is set to grip much of the United States next week, as seen on a map, with meteorologists predicting plunging temperatures and widespread disruptions.

When this vortex weakens, it can send frigid air from the Arctic southward, bringing dangerously cold temperatures to mid-latitude regions like the southern United States. In 2021, the polar vortex ...