To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

Climate deniers are quick to say ‘I told you so’ when the mercury drops. But a warmer planet impacts weather in ways that can ...

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

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.

A 2025 satellite image shows a series of ghostly ice swirls sculpted on the surface of Lake Michigan by strong winds during an extreme cold snap that covered Chicago in a blanket of snow.

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

After this weekend's snow storm moves out, cold Arctic air will move in.

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

The polar vortex will push Artic air south, and a severe winter storm could follow. How cold will it get in Louisiana?