Recent forecasts from meteorological agencies indicate Chengdu will experience mostly cloudy to overcast conditions on September 21 amid the ongoing Huaxi autumn rain pattern, with highs centered near 27–28°C. Persistent cloud cover and elevated humidity limit daytime solar heating, keeping maxima below seasonal peaks while steering probabilities toward the tightly clustered 26–29°C outcomes. Light winds and high moisture content further moderate temperatures, with any brief clearing potentially allowing a nudge toward 29–30°C. Model consensus shows low precipitation risk that day, but minor shifts in timing or thickness of cloud layers could differentiate the leading probabilities. Updated short-range model runs over the next 48 hours represent the key upcoming data point likely to refine trader positioning.