Chicago Weather September 22, 2021 5:56 am First Day of Fall 2021: When the Season Officially Begins Iisha Scott breaks down the start of fall and the autumn equinox. Local 2:34 Forecast: Sunny Monday, but storm threat looms in coming days 0:19 Person dies after falling from stands at Ohio State University graduation 2:33 Monday morning weather 2:23 CHICAGO'S FORECAST: Chances for Rain Fill the Work Week 1:30 Fallen police officers honored during annual Saint Jude Memorial March