Current forecast models indicate Madrid will reach a high of 19–21°C on October 9 under clear skies and light northerly flow, consistent with the closely matched market probabilities for 20–22°C. High pressure promotes strong diurnal temperature swings through radiational cooling at night and modest daytime heating, while the historical average high of 21°C provides a baseline. Minor differences in model guidance on exact wind speeds or residual moisture could shift the peak by 1–2°C, with northerly advection limiting warmer outcomes above 23°C. Updated runs from agencies such as NOAA or AEMET in the next 48 hours will refine resolution criteria for this single-day maximum.