Recent forecast guidance from the Japan Meteorological Agency and global models shows a mostly cloudy pattern with scattered showers possible on August 10, limiting peak solar heating and keeping the daily maximum near the 30–32°C range that dominates trader positioning. High humidity and weak steering flow typical of late-summer conditions allow modest day-to-day variability of 1–2°C, while the exact timing of cloud breaks versus rain episodes determines whether the high settles at 30°C or pushes to 31–32°C. Historical August maxima in Tokyo average near 31°C, but ongoing above-normal seasonal temperatures and limited typhoon influence this week support the tight clustering of implied probabilities around these three outcomes. Updated model runs and official JMA briefings over the next 48 hours will provide the clearest resolution signals.