Recent forecasts from the Japan Meteorological Agency and global models indicate Tokyo's overnight low on August 31 will likely settle near 24°C, driven by persistent cloud cover, high humidity near 90%, and light northeasterly flow associated with a stationary front that limits nighttime radiative cooling. This setup aligns with late-August climatology, where typical minimums range 22–25°C amid humid conditions, though recent rainy spells have kept temperatures slightly below seasonal peaks. Traders appear to weight 24–25°C outcomes most heavily as model consensus holds steady with minimal expected clearing before dawn, while lower probabilities for 23°C or below reflect uncertainty in exact wind and precipitation timing over the final forecast updates.