Chicago Weather 22 hours ago CHICAGO FORECAST: Isolated thunderstorms, cooler temperatures Saturday Cooler temperatures and isolated thunderstorms are possible in the Chicago area for Saturday. Local 3:19 Friday morning weather 2:01 CHICAGO FORECAST: Northern Lights possibly visible ahead of warm Friday 3:15 Thursday morning weather 1:09 CHICAGO FORECAST: More sunny, mild temperatures ahead Thursday 2:53 Wednesday morning weather