Latest forecast models from sources including ECMWF and regional analyses point to a peak temperature in Jeddah on September 26 between 36–39°C under clear to mostly sunny skies, with moderate northwest winds of 5–9 m/s and high humidity near 40–60% during afternoon hours. This range aligns with the market's heavy weighting toward 37°C (55.5%) and 38°C (32.5%), reflecting typical late-September Red Sea coastal conditions without significant synoptic disturbances or cloud cover to suppress maxima. Model runs show minor spread in afternoon timing and exact peak, with some guidance reaching 39°C briefly while others cap nearer 36°C; traders appear to discount extremes below 36°C or above 39°C given the narrow historical variability for the date and stable high-pressure pattern. Updated model runs and official observations near local noon will likely refine the final recorded high.