Add Yahoo as a preferred source to see more of our stories on Google. The polar vortex is stirring up, bringing the earliest hints that the weather is changing as autumn has officially arrived. In the ...

The stratospheric polar vortex is entering its seasonal collapse. But that doesn’t mean calm weather is coming. What's ...

A major polar vortex is about to impact the United States — and it could usher in weeks of frigid temperatures for millions of people, even bringing snow to Florida. Typically, cold air will seep into ...

Fall weather in Massachusetts may be in for a cold snap in the next few weeks. The National Weather Service's Climate Prediction Center is forecasting temperature drops throughout the country in the ...