Recent official forecasts from Taiwan’s Central Weather Administration indicate a 27–32 °C range for Taipei on September 3, with traders assigning the highest implied probabilities to 30–32 °C amid widespread cloud cover and showers. Persistent easterly flow and a low-pressure system are expected to deliver heavy rainfall and thunderstorms that suppress afternoon solar heating and cap the daily maximum, while any delay in convective activity or thinner cloud decks could allow brief warming toward 32 °C. Model consensus shows limited temperature spread but notable uncertainty tied to precipitation timing, consistent with September climatology of frequent afternoon convection. Updated CWA guidance and numerical model runs over the next 48 hours will refine these thresholds ahead of market resolution.