Trader consensus on a precise 38°C maximum for Jeddah on October 7 rests on consistent real-time observations and model outputs showing afternoon peaks near that threshold under clear to partly cloudy skies, moderate westerly winds, and typical Red Sea humidity. Multiple sources, including Met Office guidance and local station data, align on daytime highs of 36–38°C with no signals of anomalous warming, consistent with October climatology where coastal moderation limits extremes. The near-certain market-implied odds reflect this convergence and the absence of late-day surges. Only an unforeseen model shift or localized measurement anomaly at the official station could realistically push the recorded high to 39°C or above before resolution.