Recent forecasts from the Japan Meteorological Agency and ensemble models indicate scattered showers and increasing cloud cover over Tokyo on August 28, limiting daytime heating despite typical late-summer humidity. This setup favors a peak near 30–31 °C, with afternoon convection potentially trimming the maximum further depending on timing and intensity of any thunderstorms. Traders assign the highest implied probabilities to these outcomes because current guidance clusters tightly around that range, while drier or clearer scenarios that could push readings to 32 °C or above remain less favored. Updated model runs and official JMA briefings in the next 48 hours will be the key catalysts for any shifts in market sentiment.