**Current forecasts from multiple meteorological sources, including Chinese agencies and international models, indicate a minimum temperature in Beijing on August 31 most likely between 18–20 °C under clearing skies and light northerly to northeasterly flow.** Recent days featured a cool-down with an 18.1 °C low on August 28 amid showers and clouds, followed by stabilization under building high pressure. This setup favors radiational cooling overnight but limits deeper drops due to residual moisture and light winds. Historical climatology places the average August 31 low near 19.4 °C, providing context for the narrow band traders favor. Model consensus supports sunny to partly cloudy conditions with daytime highs around 28–30 °C, allowing efficient nighttime heat loss without cold-air advection. The tight clustering of market-implied probabilities around 17–19 °C reflects this agreement, while tails (below 15 °C or 23 °C+) remain low-probability given the absence of strong fronts or anomalous moisture. Traders are effectively pricing residual uncertainty in final model runs and local observations over the next 48 hours.