Chicago Forecast December 15, 2024 7:32 am Chicago Forecast: Mild temps to start the week Highs in the 40s Sunday; 50 Monday Local 2:19 Chicago evening forecast: Christmas forecast marred by rain 2:12 Chicago forecast: Cloudy, with afternoon showers developing 2:46 Monday morning forecast 2:27 Chicago's Forecast: Wintry Mix into Monday Morning 2:24 CHICAGO FORECAST: Not As Cold Sunday