Trader sentiment clusters tightly around 19–21°C for Chongqing's March 27 high temperature, driven by converging outputs from global weather models like ECMWF and GFS, which median at 20°C amid low-confidence diurnal peaks. Official China Meteorological Administration forecasts project 20–21°C under partly cloudy conditions with light winds, amplified by Chongqing's urban heat island effect boosting afternoon maxima by 1–2°C above rural baselines. Historical late-March highs average 19.5°C, but recent mild advection and minimal precipitation favor the upper cluster; subtle differentiators include cloud cover variability—persistent afternoon overcast caps at 19°C, while clearer skies enable 21°C. Ensemble spread reflects timing uncertainty in solar insolation.