Chicago Weather December 1, 2021 12:17 pm Chicago Forecast: This Is December? Temperatures will climb to as much as 15 degrees warmer than average. NBC 5 Meteorologist Paul Deanno updates your forecast. Local 2:32 CHICAGO FORECAST: Strong, Severe Storms Possible This Evening, Tonight 2:22 CHICAGO FORECAST: Rain Moves In Tonight 2:25 CHICAGO'S FORECAST: Great Weekend Weather! 2:28 CHICAGO'S FORECAST: Sunshine Returns On Monday 2:23 CHICAGO'S FORECAST: Sunday Night Storms