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

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

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast. Here's the forecast.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

A significant portion of the U.S. is experiencing below-average temperatures due to a disrupted polar vortex, affecting over 170 million people. This phenomenon has allowed intense Arctic air to ...

A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 ...

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

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.