Recent forecasts for Jeddah indicate overnight lows near 28–30°C on September 29 under persistent high pressure and light northwesterly winds, consistent with late-September Red Sea coastal climatology where typical minima range 26–30°C. The near-even split between 23°C-or-below and 33°C-or-higher outcomes reflects model uncertainty in nocturnal radiative cooling and sea-breeze moderation two days ahead, with traders weighing potential for slightly stronger onshore flow against the low historical probability of sub-25°C readings this late in the season. Upcoming updated runs from global models and local observations will likely narrow the range before resolution.