Recent forecasts from multiple models indicate Madrid's September 28 maximum will likely fall between 24–26°C due to a cooler maritime air mass arriving from the southwest, increased cloud cover, and scattered showers that limit solar heating and enhance evaporative cooling. Southerly winds and rising humidity further moderate peak temperatures compared to the prior week's highs above 30°C. Historical averages near 23.6°C and the observed cooling trend support this range, with minor model differences in precipitation timing creating the tight clustering around 25°C in trader odds. Updated short-range guidance expected overnight will refine the exact peak.