Traders are weighing short-range ensemble forecasts from global models like ECMWF and GFS alongside China Meteorological Administration guidance, which currently cluster Shanghai’s October 17 minimum near 22–23 °C under a building high-pressure ridge. This setup favors clear to partly cloudy skies and light winds that limit nocturnal cooling, keeping overnight lows several degrees above mid-October climatological norms of roughly 16–18 °C. The narrow spread between the two leading outcomes reflects small differences in predicted boundary-layer moisture and cloud timing, while lower-probability colder bins would require an unexpected frontal passage or stronger radiational cooling. Updated model runs and official briefings over the next 48 hours will determine whether any shift in steering flow alters the current consensus.