Recent forecast model runs and persistent monsoon moisture transport have created tight clustering around 31–33°C as the most probable maximum for August 3 in Chengdu, reflecting substantial day-to-day variability in cloud cover and shower timing. Subtropical high pressure ridges interacting with remnant typhoon circulation are steering humid air masses across Sichuan, where frequent convective activity can either cap daytime heating through thick cloud decks or permit brief clearing that allows urban heat-island amplification to push readings higher. Historical August climatology shows a 30–35°C range under similar patterns, while latest ensemble guidance indicates modest spread tied to exact rainfall onset, keeping market-implied odds closely bunched rather than skewed toward extremes.