Thursday: Mostly sunny, morning fog. Dense Fog Advisory until 9 a.m. for southern Cook, Kane, DeKalb, LaSalle, Kendall, Grundy, Will, Kankakee, all of NW IN. High: 82

Thursday night: Partly cloudy, low: 64

Friday: Partly sunny, high: 84

Full forecast details and more at the WGN Weather Center blog