Current ensemble forecasts from global and regional models, including ECMWF and GFS, indicate Shanghai's July 19 maximum will most likely fall between 31–33°C, consistent with the tightly clustered market-implied odds. A weakening subtropical ridge and increasing moisture from the East China Sea are expected to bring periods of cloud cover and light showers that limit afternoon heating, producing modest positive anomalies relative to the mid-July climatological average near 33°C. Official China Meteorological Administration updates and 48-hour model runs will refine whether boundary-layer mixing or brief clear intervals push readings toward the upper or lower end of this narrow range.