Recent meteorological model runs indicate a stable subtropical high-pressure pattern over the western Pacific, supporting mostly clear to partly cloudy skies and westerly flow that favors daytime heating in Taipei on September 27. Ensemble guidance from global and regional models clusters daily maxima near 33–34 °C, consistent with late-September climatology yet slightly above the long-term average due to reduced cloud cover and modest downslope warming. Low precipitation probabilities and dew points in the low-to-mid 20s °C further limit evaporative cooling, elevating the chance of a 35 °C reading at the official station. Traders appear to weight these factors heavily while acknowledging residual uncertainty from possible afternoon convective development or minor forecast adjustments ahead of the Central Weather Administration’s next high-resolution update.