WASHINGTON — Get ready for extreme cold weather in D.C. and most of the U.S. over the next few days. The polar vortex has ...

In Indiana, around zero degrees was likely, the map showed, with temperatures of around three degrees possible in Northern ...

A polar vortex over southern Ontario means Waterloo region, Guelph and Wellington County will experience very cold ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

State Climatologist Jay Grymes said there could be lows of 20 degrees across the state between Monday and Wednesday and the ...

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

Very cold arctic air will interact with several systems to bring chances of freezing rain, sleet, and snow ...

A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day.

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

The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...