**Recent forecasts for Jeddah on September 4, 2026, show daytime highs clustering around 36–38°C under stable high-pressure conditions, sunny skies, and persistent northwesterly winds typical of the Red Sea coast in late summer.** Models from sources like WeatherBug indicate potential peaks near 38°C (101°F), while others such as PredictWind and Meteoprog lean toward 35–37°C, aligning with the market's top outcomes (38°C at 41%, 37°C at 25%, 39°C at 19.5%). These reflect the consensus from numerical weather prediction ensembles, which incorporate current sea-surface temperatures in the Red Sea, low humidity variability (around 40–50%), and minimal cloud cover that allows strong solar heating without significant modulation. No major synoptic shifts, such as an intensified heat dome or unusual wind patterns, have emerged in the past 48 hours to push probabilities toward 40°C+ or below 36°C. Historical September baselines for Jeddah average near 36–37°C maxima, providing context for why traders assign the highest implied probabilities to the narrow 37–39°C range. Updated model runs closer to the date will likely refine these odds, particularly any revisions to boundary-layer mixing or local sea-breeze effects.