The large-scale Pacific Ocean climate patterns that help steer weather patterns around the globe are shifting yet again.

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.

Between the cold ground temperatures, snow cover and low winds, the warm-up won’t be quick. But the forecast from the National Weather Service in State College shows that temperatures will rise to the ...

A cold weather advisory with wind chills as low as -15 degrees is in effect until noon on Feb. 7 after a passing winter storm ...

During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

There's a confounding dilemma for many folks trying to make sense of winter weather in the context of climate change.

A polar vortex is bringing frigid temperatures and dangerous wind chills as low as minus 10 degrees to Delaware this weekend.

A vast winter storm is gripping the United States, bringing dangerous snow, ice and plunging temperatures to millions.

Arctic air is already gripping much of the country, and the obvious concern for families from Atlanta to Albany is whether that deep freeze will surge into Georgia next. The polar vortex is being ...

A warming Arctic can stretch the polar vortex, a high-altitude air ribbon, one says. The “wobble” can disrupt the jet stream, ...

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.

Life-threatening cold is expected across the Northeast and New England this weekend, with dangerous wind chill temperatures between -10 and -30 degrees below zero for many places.