Current short-range forecasts from the Japan Meteorological Agency and regional models indicate a Tokyo overnight low near the 21.1 °C July normal, with widespread cloud cover and scattered showers expected to limit radiative cooling. High humidity and light winds further suppress temperature drops, while the urban heat-island effect adds a modest warming bias. These conditions produce tight clustering around 21–22 °C in the market, with 23 °C or higher priced lower due to limited daytime heating carry-over and 20 °C or below discounted by the absence of clear-sky advection of cooler air. Updated model runs over the next 48 hours will refine the balance between cloud thickness and boundary-layer mixing.