Recent forecast model runs from agencies like the National Center for Meteorology indicate typical mid-August conditions for Jeddah, with maximum temperatures likely peaking near 38°C amid Red Sea coastal humidity and moderate northwesterly winds. The closely bunched market probabilities around 37–40°C reflect genuine ensemble spread in global and regional models, where small differences in cloud cover, wind speed, or sea-breeze timing can shift the daily high by 1–2°C. Historical August baselines near 37–38°C provide context, yet ongoing above-average warmth across the region keeps the 40°C+ tail plausible if subsidence strengthens. Updated model guidance expected within 24 hours will likely narrow the implied probability distribution ahead of the observation window.