Short-term forecast guidance from regional models positions Jeddah’s June 17 maximum near 38–39 °C, aligning with the market’s leading implied probabilities of 30 % and 28 % for those exact outcomes. Jeddah’s Red Sea coastal setting produces hot, humid conditions where strong June solar insolation and typically clear skies drive daytime heating, while light onshore winds and high moisture content moderate extremes relative to inland sites. Historical station records show mid-June peaks clustering around 37 °C, with 38–39 °C occurring under stable high-pressure patterns and minimal cloud cover. Ensemble spread in the next model runs, plus any shifts in wind speed or boundary-layer mixing, will determine whether the peak reaches 40 °C or stays at 37 °C; traders are weighting the narrow 1–2 °C uncertainty band accordingly.