National Weather Service United States Department of Commerce

A clipper system will spread light snow across the area this evening through early Wed morning before it exits the area. Most areas will have 1 to 2 inches of snow accumulation, except far southeast Iowa into northeast Missouri where they will have less than 1 inch. But these areas of lesser snow accumulations may have some sleet mix in with the snow after midnight. Southeast winds will become gusty after Midnight possibly producing some drifting into Wednesday morning. A few slick spots may occur on untreated roads.
A fast moving storm system will bring light snow chances (60-100%) tonight and quickly exit the region before sunrise Wednesday. Then, much warmer temperatures will finish off the work week with widespread highs in the 60s by Friday!
Here's the start and ending times of tonight's light snow event.