After seeing readings struggle to reach 20-degrees Saturday, a major change will allow the return of southerly winds and a 20 to 25-degree warm-up here by Monday. Winds will pick up, resulting in rising temperatures Sunday night into Monday morning.
Rain should spread over Illinois from the southwest Monday, as temperatures warm into the 40s. Winds will then shift to the northwest pulling colder air into the area, resulting in rain changing over to a light wet snow before diminishing early Tuesday.
A lot can happen between now and next Thursday, but current indications are the storm track will spread either sleet or snow accompanied by strong easterly winds over northern Illinois and southern Wisconsin into northwest Indiana during the day Thursday with the precipitation in the Chicago area becoming all snow later that day – extending well into Friday.
If true, significant snow accumulations and travel complications could occur.