The 10-day weather forecast for Yorkville, Illinois is expected to be largely cloudy, with a morning high of 54F with temps falling to near 40. However, it will be mostly sunny and mild, with temperatures expected to fluctuate between 45 and 50 degrees Fahrenheit. The forecast also includes a potential rain shower or two during the evening, followed by partly cloudy skies late in the evening. The weather outlook for the coming days will be reviewed by the National Institute of Energy and Safety.