**Forecast models and historical baselines position 23–24°C as the most probable minimum temperature for Tokyo on August 10, 2026.** Official outlooks from sources like AccuWeather and Japan Meteorological Agency-aligned sites indicate typical August overnight lows of 23–26°C (74–78°F), with a specific short-term projection for August 10 showing a low near 24°C under cloudy skies and scattered showers (high around 33°C). This aligns with seasonal norms where Tokyo’s urban heat island and high humidity (often >75%) usually prevent minima from dropping much below 24°C absent strong frontal systems or typhoon influences. Recent model consensus favors this range because August 2026 has so far tracked close to or slightly above the long-term August average low of ~24°C, with no major cool anomalies in the preceding days. Cloud cover and precipitation expected that day can modestly suppress daytime heating and allow slightly cooler dawn readings, supporting the heavy market weighting on 24°C (61.5% implied probability) and 23°C (31%). Lower outcomes like 22°C or below remain possible only with unexpected stronger cooling or measurement variability at official stations, while warmer minima (25°C+) would require clearer, more humid conditions that current guidance does not favor. Traders are incorporating the proximity to resolution—new JMA or ensemble forecast updates in the next 24–48 hours could shift probabilities if models diverge on shower timing or intensity. Overall, the market reflects skin-in-the-game consensus around the most likely observed minimum under prevailing summer patterns.