South Chicago Heights IL Yearly Monthly weather forecastWeather conditions for Chicago Heights can be unpredictable from time to time. The weather can range from hazardous heatwaves in the summer to extremely cold wintry that include heavy snowfall. It is constantly important being prepared for a variety of climate conditions in Chicago Heights. Stay updated about the atmospheric forecast in order to plan your daily routines appropriately and attire appropriately. Keep safe and make the most of the diverse weather experiences that are Chicago Heights has to offer.