Trader consensus has locked onto 35°C as Madrid’s highest temperature on September 14, driven by converging outputs from major forecast models such as those run by the European Centre for Medium-Range Weather Forecasts and Spain’s AEMET. These indicate persistent high pressure, clear skies, and daytime heating consistent with late-summer norms for the Iberian Peninsula, where average September maxima near 30°C but can reach the mid-30s under similar synoptic patterns. Official verification will rely on measurements at primary stations including Retiro and Barajas. Only an unexpected late-day shift in cloud cover, advection, or station-specific microclimate effects could realistically alter the recorded peak.