CHICAGO — Mostly cloudy Tuesday with a 20 percent chance of showers. Decreasing clouds, winds: N 10-15 G20. High: 70.

Mostly cloudy Tuesday night with a 30 percent chance of rain/storm. Winds: NNE 5-10. Low: 53.

Wednesday, September 13
HIGH: 66 LOW: 52

Slight chance of isolated morning showers. Partly cloudy skies by the afternoon. High 66.
Wednesday night: Partly cloudy & cool in outlying areas. Overnight lows in the city 52, suburbs in the mid to upper 40s. 

Thursday, September 14
HIGH: 72 LOW: 54

A chilly start, but nice sunshine and highs warming to the comfortable low 70s in the afternoon. High 72, Low 54.

Friday, September 15
HIGH: 77 LOW: 58

Mostly sunny & a bit warmer as highs get into the mid to upper 70s. Mostly clear overnight. High 77, lows upper 50s. 

Full forecast details and more at the WGN Weather Center blog