Recent Japan Meteorological Agency and international model consensus points to a highest temperature near 24°C in Tokyo on October 17 under mostly clear skies and light northerly flow, supporting the market's leading 46.5% implied probability for that outcome. This aligns with a brief post-frontal warming trend after mid-month conditions near 22–23°C, exceeding the 1991–2020 October average high of 22°C. Dry air and minimal cloud cover favor modest daytime heating, while 23°C holds the next-strongest share at 26.5%. Final model runs and official JMA briefings in the next 48 hours will refine the exact maximum before market resolution.