Overview
- Chicago recorded unusually cool, rainy conditions on Father's Day with more than 12 hours of rain that produced urban ponding and stalled vehicles in neighborhoods such as Bridgeport.
- A more organized storm system will bring widespread showers and pockets of heavy rain from Monday into Tuesday, creating slow commutes and localized flooding risks.
- Thunderstorm chances return by midweek with models showing renewed storm activity Wednesday into Thursday that could bring additional heavy downpours.
- Lake Michigan beaches were placed under a high swim risk on Monday because dangerous waves up to about six feet increased drowning and surf hazards for swimmers.
- Temperatures are forecast to moderate late in the week with highs climbing into the 80s by Saturday and a chance of near‑90 readings early next week, a trend supported by the Climate Prediction Center's outlook.