Highest temperature in Miami on September 18? - 90 to 91
Prediction market on polymarket_us. Will the highest temperature recorded at Miami International Airport (KMIA) in Miami for 2026-09-18 as reported by the National Weather Service's Climatological Report (Daily) be between 90F and 91F? Outcome verified from NWS Climatological Report.
Resolves: 9/19/2026.