**Trader consensus has converged on 36°C as the official high for Madrid on September 5, 2026, backed by real-time station observations.** Under a strong anticyclonic ridge, clear skies and southerly flow allowed daytime temperatures to climb steadily, with multiple hourly readings peaking at 36°C during the afternoon according to AEMET and regional airport data. This outcome aligns with model guidance showing a warm anomaly several degrees above the late-summer climatological average of roughly 29°C. Minor probabilities on adjacent values reflect only residual uncertainty around exact station selection or rounding conventions. New official daily summaries or post-event quality control remain the only realistic paths to any adjustment.