Trader consensus on Jeddah's June 28 maximum temperature shows tight clustering around 37–39°C because short-range forecast models exhibit only modest spread in key variables. The Red Sea coastal setting typically delivers daytime highs of 36–40°C in late June under strong subtropical ridge influence, with sea breezes and high humidity limiting further extremes. Latest GFS and ECMWF runs indicate subtle differences in 850-hPa temperatures and boundary-layer mixing that separate the leading bins, while cloud cover or wind shifts could cap readings near 36°C. New model cycles and observational data over the next 48 hours remain the primary catalysts likely to adjust these market-implied odds.