Latest Japan Meteorological Agency forecasts issued April 30 position trader sentiment toward mild highs around 20-21°C for Tokyo on May 1, with a projected maximum of 22°C under morning rain clearing to cloudy skies and 80-90% precipitation odds early, limiting solar heating and capping intensity below seasonal norms. Model ensembles show spread—some like extended guidance indicate 19°C amid overcast conditions and southerly winds—reflecting uncertainty in frontal passage timing and cloud persistence, consistent with 42% implied odds for 21°C or higher versus strong support for 19-20°C. Early May climatology averages 21°C highs, but recent April mildness (15-20°C) and today's updates anchor the tight clustering; intraday observations will sharpen resolution.