October 30, 2017 11:45 pm Temps Close to 40 on Halloween Brant Miller has the Halloween forecast for the Chicago area. Local 2:29 Chicago Forecast: Lake-influenced temperature swings this week 2:28 Chicago's Forecast: Feeling Like Spring! 2:27 CHICAGO FORECAST: Mostly sunny skies, warmer temperatures 2:24 Chicago Forecast: Feeling more like spring 2:17 CHICAGO FORECAST: Soggy Tuesday