Trader consensus on a 26°C high for Chengdu on September 30 reflects convergence among official forecasts and observational data from the China Meteorological Administration and global models, which project a maximum of 26°C amid persistent cloud cover, light rain, and northeasterly winds that limit daytime heating in the Sichuan basin. Current surface observations through midday show temperatures peaking near this level with high humidity and minimal solar insolation, consistent with late-September climatology for the region. This positioning accounts for typical model agreement on steering patterns and moisture, though a sudden break in cloud cover or localized station variance could push readings marginally higher before official verification closes the market.