Forecast models from sources including the GFS and ECMWF indicate a high near 29–31°C in Chongqing on September 26, with partly to mostly cloudy skies, light northwest winds, and low precipitation chances limiting daytime heating. High humidity near 70–80% and scattered cloud cover are key factors capping the peak, while any brief clearing could push readings to 30–31°C. Recent runs show tight clustering around 29–30°C, explaining the near-even market split at 35% and 34.5% implied probability for those two outcomes. Historical September averages hover near 27°C, so current guidance reflects modest late-season warmth. Traders will watch the final overnight model updates and any changes in cloud trends for resolution signals.