The National Weather Service said parts of Lake and McHenry counties are projected to receive 3-5 inches of snow by Wednesday morning, with some areas seeing around six inches.
The National Weather Service (NWS) issued a winter weather advisory early Tuesday morning for northeast Illinois.
The advisory covers Lake, McHenry, DuPage and Cook counties.
The advisory said there would be periods of snow, including lake-effect snow showers, with slushy accumulations on roadways.
The NWS said total snow accumulations are expected to be 2-5 inches.
Higher amounts near six inches are possible across interior portions of Lake, northwest Cook and McHenry counties.
Limited snow accumulations are expected along the immediate Lake Michigan shoreline on the far east side of Lake County.
The NWS said motorists should plan on slippery road conditions during the evening commute.
Snow rates may exceed an inch per hour from late Tuesday afternoon to early Wednesday morning due to lake-effect snow showers.
The snow is expected to stop Wednesday morning.