Recent forecasts indicate a cold air mass advancing from northern China will drive Wuhan's September 16 minimum temperature, with official outlooks projecting 18–22°C amid scattered showers and northerly winds of 3–5 m/s. This advection of cooler, moister air contrasts with typical mid-September climatology of 20–22°C lows, as enhanced cloud cover and potential rainfall suppress nighttime radiative cooling while increasing boundary-layer mixing. Model consensus shows modest disagreement on exact timing of the frontal passage and precipitation intensity, which directly influences how low surface temperatures fall before dawn. Traders appear to price this uncertainty across the 18–27°C range, with the highest-implied-probability bins reflecting the balance between expected cooling and residual warm-air influence from preceding days. Updated numerical weather prediction runs and China Meteorological Administration briefings will likely refine these probabilities ahead of resolution.