Current numerical weather prediction models from the Japan Meteorological Agency and global ensembles point to Tokyo's overnight low on August 24 settling near 23–25 °C, reflecting typical late-summer subtropical conditions with moderate humidity, light winds, and variable cloud cover that limit radiative cooling. Recent forecasts show partly cloudy skies or scattered showers, which could modestly suppress the minimum by retaining heat overnight, while the urban heat island effect in central Tokyo tends to elevate readings relative to rural baselines. Historical climatology for the period supports averages around 24 °C, and the absence of strong frontal systems or typhoon influences keeps probabilities concentrated in this narrow band. Updated model runs and official guidance issued in the next 24–48 hours will refine these ranges ahead of market resolution.