The wintry mix is expected to continue into Sunday morning before changing to rain between 10 a.m. and 1 p.m., followed by a mix of rain and snow later in the afternoon. The chance of precipitation is 90%, with less than a half inch of new snow expected.

As a frigid air mass descends upon the central U.S., intense lake-effect snow is expected to hit the Chicago area late Sunday night into Monday as temperatures drop into the 30s, according to forecas...