CHICAGO — Patchy fog with mostly cloudy conditions and isolated sprinkles Thursday. Decreasing clouds, Winds: NNE 0-5 G10. High: 70.

Partly cloudy tonight with patchy fog. Winds: NNE 0-5 G15. Low: 57.

Friday Forecast: Patchy fog, mostly sunny, ESE 0-5. High: 75/71.

Full forecast details and more at the WGN Weather Center blog