Chicago Heights Weather Forecast for Tomorrow GISMETEOWeather conditions in Chicago Heights are changeable occasionally. Weather conditions can range from extreme heat waves in the summer to bitterly cold wintry that include significant snowfall. It's consistently important being ready to face a variety of climate conditions within Chicago Heights. Remain updated about the weather forecast to prepare your activities appropriately and attire appropriately. Stay safe and make the most of the diverse meteorological experiences that are Chicago Heights has to offer.