**Forecast models converge on a lowest temperature near 29–30°C for Jeddah on October 8, driven by typical Red Sea coastal moderation and clear, calm conditions that limit overnight radiative cooling.** Highs are projected at 34–36°C under sunny skies with light northwesterly winds, while minimums hover around 29–30°C as humidity remains elevated (60–75%) and prevents sharp drops. Historical October baselines for the city show similar nighttime lows in the upper 20s to low 30s°C, with no major synoptic features like fronts or enhanced winds expected to alter this pattern. Slight model spread—some runs dipping to 28°C while others stay near 31°C—explains the tight market clustering around 30°C (43.5% implied) versus cooler brackets, as traders weigh precise measurement thresholds at official stations against minor forecast variability. Updated runs from agencies like the Saudi meteorological service will likely refine the exact minimum before resolution.