Currently the NWS says:
"Two storm systems to affect the area
over the next several days.
"The first weather system late today and tonight will produce
light snow accumulations... around 1 inch.
"The second storm for late Sunday into Monday morning has the
potential to produce a significant amount of snow, sleet and
possibly some freezing rain over parts of central, east-central and
southeast Illinois late Sunday through Monday morning."
See National Weather Service
See additional details in NWS