Recent Japan Meteorological Agency forecasts for August 4 show mostly cloudy skies over Tokyo with a predicted daily high near 28–29°C, a few degrees below the early-August normal of 31.8°C, due to increased cloud cover and a modest chance of showers that limit daytime heating. Ensemble model guidance from multiple sources aligns on this range, with limited spread because steering patterns and moisture remain stable through the short-term window. The close market-implied odds between 28°C and 29°C reflect remaining uncertainty in the precise timing of any clearing versus persistent cloud decks, which can shift the peak by 1–2°C, along with local measurement nuances at the primary observing station. No strong high-pressure ridge or typhoon influence is expected to push values toward 30°C or above in the next 48 hours.