Recent short-range forecast models from sources including the China Meteorological Administration and international ensembles indicate Shanghai's overnight low on September 27 will likely settle near 23–24°C under persistent cloud cover, light rain, and light variable winds that limit radiative cooling. High humidity near 85–90% and daytime highs in the upper 20s further moderate the diurnal range compared to clearer conditions. Market-implied odds reflect this tight clustering, with modest probability on 22°C arising from possible model runs showing slightly stronger northerly flow. New GFS and ECMWF updates expected within 24–48 hours, along with official Shanghai bureau guidance, will provide the key data shifts ahead of resolution.