Forecast models from agencies like AEMET and ECMWF indicate a typical late-summer high-pressure pattern over central Spain for August 15, 2026, with daytime maxima expected near 31–33°C in Madrid, aligning with the market’s leading probabilities clustered around 31–32°C. Recent runs show modest cooling from possible afternoon cloud build-up or isolated thunderstorms, reducing peak solar heating and keeping surface temperatures below seasonal extremes. Key variables include steering flow strength from the Azores high, boundary-layer moisture that could enhance or suppress convective cooling, and Madrid’s urban heat island effect, which adds 1–2°C locally under clear skies. Ensemble spread remains wide due to timing uncertainties in any frontal passage, explaining the broad distribution across 30–36°C outcomes and low implied odds for extremes above 37°C. Updated model guidance later today will likely tighten the range ahead of market resolution.