"Bitter cold could linger through the end of the month," the Weather Prediction Center said in an update on Monday.

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A crippling winter storm that could paralyze parts of the Southern and Central U.S. this weekend, and some of the effects ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

Environment Canada has issued weather warnings for most of Canada over a 'high or moderate impact level' cold blast that is ...

Ontario may be one of the coldest places on the planet this Friday as an airmass is expected to be centred over the province, ...

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

A polar vortex is settling over the eastern United States, and temperatures are expected to fall into the weekend, bringing ...

Watch as a massive bowl of Arctic air is set to bring extreme, potentially record-breaking cold temperatures to parts of the ...

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.