Southern Colorado will be cooler on Tuesday behind a cold front that blows through on Monday night. This cool down takes us ...

Iowa weather: Record warmth to start the week before cooling down ...

Record warm winter-to-date continues across most of the West; already abysmal mountain snowpack dips to record low levels in ...

You've probably come across the words polar vortex a few times already during this winter season. Maybe you're familiar with what it truly means, or maybe not. We're here today talking about exactly w ...

After a major winter storm swept across the country in late January, a prolonged surge of Arctic air tightened its grip on ...

The United States is facing a storm unlike any seen in a long time. The National Weather Service has confirmed a blast of Arctic air that will pass through several states, urging residents to take ...

It’s that time of the year! An extensive and prolonged Arctic outbreak is on the way to impact much of the United States. From the Rockies through the Northeast and Southeast, temperatures will plunge ...

This story has been edited to correct an error. Judah Cohen is affiliated with the Massachusetts Institute of Technology. Our old wintertime friend the polar vortex ...

With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in a deep winter feel and park ...

With over 170 million Americans facing below-average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in the feel of winter and park ...

Add Yahoo as a preferred source to see more of our stories on Google. With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the ...