Recent forecasts from multiple models indicate overnight lows in Chongqing on September 1 around 22–25°C under mostly clear to partly cloudy skies with light northeast winds, consistent with the early-September climatological baseline of roughly 23–25°C minimums during the summer-to-autumn transition. Persistent warm airmass and limited radiative cooling under high pressure have kept temperatures elevated despite recent localized rainfall and modest cooling earlier in the week. Trader emphasis on outcomes at or below 18°C likely reflects uncertainty in short-range model spread and potential for localized urban heat-island effects or measurement variations, while probabilities cluster near 20–23°C align more closely with ensemble guidance and historical analogs for the date. Official updates from Chinese meteorological services over the next 48 hours will refine the final observed minimum used for market resolution.