Current forecasts from the Japan Meteorological Agency and other models indicate overnight lows in Tokyo near 19–20°C for June 25, driven by the ongoing tsuyu rainy season that moderates temperatures through persistent cloud cover and moisture. Historical normals place the daily minimum around 20°C, with recent model runs showing limited variability due to stable atmospheric patterns and no strong cold-air intrusions expected. Trader consensus, reflected in the 53.5% implied probability for 20°C and 43.5% for 21°C, aligns with this evidence-based outlook while assigning lower odds to outliers, as new observational data or updated guidance could still adjust the final recorded low within the narrow 18–22°C range.