Latest numerical weather prediction models, including GFS and ECMWF ensembles accessed via official outlets like the National Center for Meteorology (NCM), project Jeddah's highest temperature on April 17 around 36–39°C under mostly sunny skies with southerly winds enhancing daytime heating via downslope flow off the Red Sea coastal plains. Trader consensus reflects this spread, with implied probabilities clustered in the mid-to-upper 30s°C due to sea breeze moderation capping extremes below 40°C in 70% of ensemble members, while outliers account for 33°C-or-below (27.5%) from potential haze or marine layer persistence and 43°C-or-higher (26%) from stronger subsidence and clear skies. Recent days saw highs rising from 33°C amid clearing after southern thunderstorms, but short-range uncertainty persists ahead of tomorrow's 12Z model updates.