Recent forecasts for Chengdu indicate a highest temperature on September 19 most likely in the 24–26°C range, with market-implied odds reflecting modest uncertainty driven by variable cloud cover and light rain. Persistent moisture from regional monsoon influences and a mid-September pattern of small to moderate rainfall across eastern Sichuan are expected to limit daytime heating, consistent with National Meteorological Center guidance for continued wet conditions through September 22. Basin topography often enhances cloud persistence and suppresses peak temperatures compared to clearer periods. Ensemble model consensus shows highs near 25°C under overcast skies, with slight upward shifts possible if rain timing delays or downward if heavier showers develop midday. Historical September averages around 24–25°C provide context for the tightly bunched probabilities near the median. Updated model runs and official briefings over the next 48 hours will refine the exact maximum.