Chicago Weather December 21, 2024 7:20 am Chicago Forecast: Cold weekend before a warm week ahead Local 1:38 CHICAGO FORECAST: Partly cloudy skies, chilly temps ahead of brutal cold 2:21 Chicago forecast: Extreme cold coming 2:49 Friday morning forecast 1:38 CHICAGO FORECAST: Mild, cloudy Friday expected ahead of brutal cold 2:45 Thursday morning forecast