Recent forecast model runs for Madrid on September 26 indicate a partly cloudy regime with southerly flow supporting afternoon highs near 33–34°C, driving the near-even market split between those two outcomes. Dry air and light winds limit mixing while variable cloud cover introduces uncertainty in peak insolation, keeping probabilities tightly matched rather than favoring a clear outlier. Historical September maxima in the city average around 26–28°C, placing the current setup modestly above seasonal norms but well below record levels. Updated model guidance overnight and morning surface observations will refine the final maximum before official AEMET reporting resolves the market.