**Recent forecasts for Jeddah on September 22 point to a daytime high near 35–37 °C under mostly sunny skies and light westerly winds.** Multiple models converge on this range, consistent with the month’s climatological average high of about 36 °C and recent observations of 36–38 °C. The coastal Red Sea setting and moderate humidity help cap extreme heating, while stable high pressure and minimal cloud cover support typical late-summer warmth. The tight clustering of market-implied probabilities across 34–39 °C reflects genuine forecast uncertainty in peak temperature, driven by small differences in model timing of maximum insolation, local wind gusts, and exact station measurement. Lower-probability outcomes below 33 °C or above 39 °C would require an unexpected shift in steering patterns or a stronger sea-breeze suppression, neither of which current guidance supports. Updated model runs and official observations in the next 48 hours will likely narrow the distribution.