Highest temperature in Chicago on September 30? - 68 or below
Prediction market on polymarket_us. Will the highest temperature recorded at Chicago Midway Airport (KMDW) in Chicago for 2026-09-30 as reported by the National Weather Service's Climatological Report (Daily) be less than or equal to 68F? Outcome verified from NWS Climatological Report.
Resolves: 10/1/2026.