Recent Japan Meteorological Agency observations and model consensus indicate a daily maximum temperature of 22°C for Tokyo on October 4, 2026, with afternoon readings peaking near that threshold under mostly cloudy, northerly flow. Trader consensus aligns closely, assigning near-certain implied probability to the 22°C outcome as multiple forecast runs converge on this value without significant upward revision expected. This positioning reflects typical early-October cooling from September averages, with surface data confirming no late-day spike. A final official JMA report could shift the recorded high if measurement adjustments occur, though current conditions make such changes unlikely.