National Weather Service United States Department of Commerce

The cold, unsettled weather pattern will bring a good portion of the area light snow accumulations today. Once the snow starts, it should persist several hours, especially along and north of I-80 where up to a couple inches of accumulation may be seen. Because of the cold temperatures and patchy drifting, some roads will very likely become slippery. Use caution and allow extra time. For road conditions, see in Iowa: 511ia.org and in Illinois: gettingaroundillinois.com
Rinse and repeat into Sunday, with snow likely again especially along and north of I-80. It will be a smidge milder than today with less wind during the snow, however the wind will pick up sharply near sunset, and that likely will result in patchy shallow blowing and drifting in northern locations. Again on Sunday afternoon into the evening, allow extra travel time and use caution.
While it is cold this morning, more noteworthy cold is on the way by weekend’s end with wind chills of 10 to 25 below zero (from south to north) forecast for Sunday night into Monday morning. Be ready to bundle up! Cold weather safety: https://www.weather.gov/safety/cold
Winter driving can be hazardous, even in small snowfall amount events like today's and Sunday's. Slow down to keep yourself and everyone on the road safe. Remember, “Ice and snow, take it slow”. Learn more at weather.gov/safety/winter