Chicago's summer temperatures were swapped Thursday for a fall-like high of 69 degrees.
A slow-moving cold front came through the metro area with much cooler afternoon temperatures that fell into the upper 50s north and west of Chicago, and into the low 60s south and west of the city.
Showers came in behind the front. The Major League Baseball game between the White Sox and the Detroit Tigers was postponed due to rain and will be made up Monday, Sept. 17 at 1:10 p.m.
Thursday evening radar images showed most areas would get less than a tenth of an inch as colder, drier air settled in overnight. As skies clear, temperatures could drop as low as the mid- to upper 40s inland and mid-50s in Chicago.
After a chilly start on Friday, temperatures are expected to moderate and swing back into the low to mid-70s. Such mild conditions should stick around for the rest of the weekend.