January 15, 2017 8:00 am Sunday Forecast NBC5 meteorologist Pete Sack has your latest forecast for the Chicago area. Local 2:19 CHICAGO'S FORECAST: The Warm-up Begins! 2:31 CHICAGO FORECAST: Lake-Effect Rain Showers Develop Overnight 2:25 CHICAGO'S FORECAST: More Seasonal October Weather 2:33 CHICAGO FORECAST: Summer-Like Warmth Friday 2:09 CHICAGO FORECAST: Mostly Sunny and Seasonably Cool Monday