Official Japan Meteorological Agency observations for September 9, 2026, recorded a daily maximum of 31.3°C at the Tokyo station amid morning humidity near 80% and afternoon showers, aligning precisely with the market's 100% implied probability on 31°C. This outcome reflects real-time thermometer data under variable southerly flow that limited further warming despite residual summer warmth. Nearby sites reported similar peaks around 30–32°C before a sharp evening drop with northerly winds. A revision in official records or use of an alternate station threshold could theoretically shift resolution, though historical JMA verification processes make such changes improbable given the clear observational consensus.