CHICAGO — Mainly cloudy Friday with AM fog and drizzle. Light late day and evening snow expected and cooler conditions this afternoon than this AM. Winds: NE 10-15 G25. High: 30.

Mainly cloudy tonight with light snow. Winds: ENE 10-15 G25. Low: 23.

Saturday Forecast: Mostly cloudy, AM flurries, ENE 10-15 G25. High: 24.