Recent Central Weather Administration forecasts and ensemble model runs for Taipei on September 2 show daytime maxima likely reaching 32–34°C under easterly flow, moderate humidity near 70%, and only a 20–40% rain chance that could limit afternoon heating. The tight 34°C–35°C market split reflects uncertainty in exact solar insolation and urban heat retention once clouds clear, with historical September baselines around 30°C providing context for any upward revision. Traders weigh GFS and local model spreads on timing of any showers against the current stable pattern, awaiting the next CWA update or midday observations for clearer signals on whether the peak crosses 35°C.