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

Extreme cold could expose residents of several states to conditions like hypothermia and frostbite over the weekend.

The coldest air of the season will descend across the U.S. this weekend and early next week, bringing subzero wind chills with it.

This morning brought the lowest temperatures of the week, with subzero readings in the city, and between -5 and -10 in areas outside Columbus, under a dome of arctic high pressure. High clouds ...