Recent forecasts from multiple models indicate persistent cloud cover, light rain, and high humidity over Tokyo on September 28, with afternoon highs expected near 24–25°C under southwesterly flow and limited solar heating. These conditions suppress daytime maxima below late-September climatological averages of 26–27°C while preventing sharper cooling. Trader consensus clusters on 25°C and 26°C because small variations in cloud timing or brief clearing could shift the peak by 1°C, and official Japan Meteorological Agency observations will resolve the market based on the verified daily maximum at the Tokyo station.