The coldest air of the season has brought feels like temperatures down into the 40s below zero during Sunday night and into Monday morning.

First responders in western South Dakota were called to a couple of semis that flipped over on Interstate 90 on Thursday morning.

On Saturday morning, those traveling on Interstate 90 found themselves with quick changes in the weather and road conditions.

A quick-moving system brought a mixture of rain, freezing rain, and snow to different parts of South Dakota.