According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

The Montana and Wyoming mountains will see the heaviest snow, with up to 2 feet expected until 6 p.m. local time on Sunday.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

The National Weather Service had multiple states under winter weather advisories or winter storm warnings early on Friday.

It was 48 degrees at noon on Jan. 20, 2017, when Donald J. Trump was first sworn in as president at the Capitol. This time ...

A polar vortex could cause light snow over the weekend in Knoxville. A polar vortex is to blame for freezing temperatures.

Forecasters have an idea of how much snow could fall between Sunday night and Monday, but while plowable, uncertainty looms ...

The Arctic blast highlights the contrasting weather extremes gripping the country as wildfires burn up California and freezing winds in the Northeast.

The National Weather Service issued an updated winter weather advisory at 8:28 p.m. on Wednesday valid from Thursday 4 a.m.

Controversy over President-elect Trump's inaugural crowd sizes likely will remain out of the conversation since the ceremony ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

Fire danger remains high in parts of Los Angeles that have been ablaze for days, but calmer weather may finally be on the ...