Current forecasts from major meteorological models indicate Shanghai's maximum temperature on June 12 is most likely to fall in the 30–32°C range amid typical early-summer conditions, with moderate humidity and a chance of afternoon showers that could suppress peaks. Official guidance highlights the transition into the plum rain season, where cloud cover and precipitation often moderate daytime highs below seasonal averages of 27–30°C while steering patterns limit stronger warming. Recent model runs show limited spread, supporting trader consensus around 31°C as the modal outcome, though shifts in rainfall timing or intensity remain key variables that could push readings to 29°C or 33°C. Updated National Meteorological Center guidance expected in the next 24–48 hours will refine these projections ahead of market resolution.