The polar vortex is splitting — an exceedingly rare phenomenon for this time of year that will be an unusual driver of warmer temperatures, as the calendar flips to March and meteorological spring.

Add Yahoo as a preferred source to see more of our stories on Google. This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire this weekend ...

Record cold temperatures are once again expected to hit a swath of the country this weekend—even plunging Florida into its coldest stretch of the last 15 years, potentially bringing snow to areas of ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season, followed by some of the coldest temperatures seen in years. The storm began out ...

Florida has endured a winter few could have predicted. Since early November, the state has endured at least three rounds of Arctic air, and even snow.

A mass of Arctic air from Canada is bringing brutally cold temperatures to the northeastern United States. New Hampshire is under an Extreme Cold Watch, with wind chills expected to reach 20 to 30 ...