In Chicago, while overall summer average temperatures have warmed by 1.7 degrees between 1970 and 2024, average overnight lows have increased by 2.5 degrees in that same period.

The Chicago Bears are back in action this week for offseason training activities (OTAs). It's the first year under new coach Ben Johnson and year two for the franchise with quarterback Caleb Williams.

(Audrey Richardson/Chicago Tribune) Boats pass by in the Playpen, a popular area for boaters in the summertime, located between Oak Street Beach and Navy Pier, near Oak Street Beach on June 22, 2025.