Cooler pattern coming for Chicago but won't last long

We will be breaking out the jackets in a few days but the cool pattern that is coming for Chicago won't hang around too long.

Chicago braces for one last blast of summer weather

Today will be mainly sunny and warm with highs not far from 80 degrees. Maybe a tad warmer southwest and a bit cooler lakeside.

Chicago's weekend begins with temps in the 80s

Warm weather by mid-September standards continues through much of next week. 

Warm weather continues across the Chicago area with another 80-degree day

We open with a dense fog advisory for areas roughly along and south of I-80. The rest of day will be mostly sunny and warm with highs in the low 80s.