Highest temperature in Chicago on September 10? - 77 to 78

Prediction market on polymarket_us. Will the highest temperature recorded at Chicago Midway Airport (KMDW) in Chicago for 2026-09-10 as reported by the National Weather Service's Climatological Report (Daily) be between 77F and 78F? Outcome verified from NWS Climatological Report.

Resolves: 9/11/2026.