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

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

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

A major cold blast is in store for millions of Americans as a lobe of a polar vortex will bring brutally cold temperatures to nearly every American east of the Rockies.

A major Arctic outbreak is building, bringing below-freezing temperatures to more than 100 million Americans next week.