October 23, 2016 5:45 pm Cool Down Ahead After a gorgeous fall weekend, NBC5 meteorologist Pete Sack is tracking a drop in temperatures. Local 2:20 Toddler stabbed to death by 6-year-old brother in Joliet 2:42 Accused California serial killer extradited to Illinois, appears in court 4:22 Dave Wannstedt weighs in on Caleb Williams' upcoming Bears debut 0:24 Video shows Green Day rushed offstage mid-song during Michigan concert 2:03 Chicago Forecast: Feeling like fall