People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, a meteorologist says.

Portland was forecasted to be about 6 degrees below normal Sunday and Monday, according to the National Weather Service.

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.

A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from central and southern states all the way to the East Coast early Monday, prompting schools and government offices in several states to close.

AccuWeather forecast that the state's "RealFeel" temperature could be as cold as between 10-20 degrees from January 8-10.

Recent forecasts suggest some Americans might be getting a much-needed break from the freezing temperatures that have gripped much of the country.

A major winter blast of snow, ice, high winds and plunging temperatures are stirring up dangerous conditions across the U.S. central and southern states all the way to the East Coast.

The Arctic polar vortex has been pushing icy winds throughout ... Vermont, New Hampshire and Maine. However, the map implied that lower-than-average temperatures could still be expected in many ...

The polar vortex of ultra-cold air usually spins around the North Pole ... a weather service meteorologist based in Gray, Maine. The cold air was expected to grip the Eastern Seaboard as far south as Georgia, with temperatures dropping into the low ...

The polar vortex of ultra-cold air usually spins around ... a weather service meteorologist based in Gray, Maine. The cold was expected to grip the Eastern Seaboard as far south as Georgia ...

Dozens of US states will endure the lowest temperatures they have felt in years next week as a polar vortex brings 'life-threatening' cold. Here's how you can stay safe in these harsh conditions.

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.