Chicago Heights Weather Tomorrow Accurate Forecast for Weather conditions in Chicago Heights can be changeable at times. Weather conditions can range from hazardous heat waves in the summer to bitterly cold wintry with heavy snowfall. It's consistently vital being ready to face a variety of climate conditions within Chicago Heights. Remain informed about current weather forecast in order to prepare your activities accordingly and dress suitably. Keep safe and enjoy the diverse meteorological experiences that are Chicago Heights has to offer.