A Winter Storm Watch has been issued for counties north of Springfield.
St. Clair County is under the watch through Saturday.
The National Weather Service says areas under the watch could get a mix of snow and sleet.
There could also be up to a quarter of an inch of ice.
Springfield could receive up to an inch of snow and a tenth of an inch of ice.
Areas south of Highway 60 will see only a trace of snow and ice.
Temperatures are expected to plummet Saturday, with lows Saturday night in the single digits and wind chills below zero.
