Central Indiana once again had highs around 40° on Saturday. However, this was early, around 12-1 a.m., before a cold front passed through. Temperatures slowly fell with afternoon highs only in the 30s.

A piece of the polar vortex spills into the Midwest, creating extreme cold for the Chicago area and northwest Indiana for the next few days. For Sunday morning, actual air temperatures will peak early and fall throughout the day.

Any sort of wind along with the bitter cold will make for frostbite in as little as 15 to 20 minutes in the incoming arctic cold. Our long-range forecast models are continuing to pump in wind chill temperatures between -15° and 0° consistently each morning Monday through Wednesday.

A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its frigid grip,

Several governors across the US issued warnings to residents to stay at home and off the road as the polar vortex struck deep into the American heartland and out toward the East Coast

The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances of freezing weather through much of the country.

Millions in the U.S. were hit by a major winter storm that created dangerous conditions from the Central Plains to the East Coast.

The polar vortex of ultra-cold air usually spins around ... School closings were widespread, with districts in Indiana, Virginia, Kentucky, Missouri and Kansas canceling or delaying the start ...

ANNAPOLIS, Md. — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its ...

A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its frigid grip, making many roads treacherous,

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and sends temperatures tumbling to levels not seen in years.

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