**Cold air advection and associated cloud cover plus precipitation are positioning 22°C as the dominant market-implied outcome for Wuhan's October 1 maximum temperature.** Official and ensemble forecasts from regional meteorological services show a northerly surge lowering daytime highs to the 20–23°C range under overcast skies and periods of light-to-moderate rain, consistent with the 79.5% implied probability on 22°C and secondary 16% on 23°C. This represents a notable departure from typical early-October climatology near 23–26°C. Model consensus favors modest cooling from enhanced northerly flow and reduced insolation rather than extreme suppression, while the narrow spread of lower-probability outcomes reflects residual uncertainty in exact peak timing and localized rain intensity before resolution tomorrow.