Commuters should plan for snow and slippery roads Tuesday, the city said

Snow is expected to accumulate Tuesday, creating slick roads and slippery conditions for Chicagoans’ morning commute, according to the city’s winter weather report.

Chicagoans should plan for a slower commute to and from work on Tuesday. The advisory goes into effect at 6 a.m. Tuesday and lasts until 6 a.m. Wednesday, affecting northern and central Cook County, as well as McHenry, Lake and DuPage counties.

Chicago is expected to see him the first burst of measurable snowfall beginning early Tuesday morning, one of several chances for snow during the week. Daytime highs Tuesday and Wednesday are forecast to be 34 to 38 degrees, but temperatures could drop to 9 degrees by Friday night, the National Weather Service said.

The The drop in temperature started on Friday, dipping into the low 40s after Thursday’s record high of 76 degrees. According to the weather service, this change in weather conditions toward cold and wintry conditions could continue through Thanksgiving.

mellis@chicagotribune.com