Trader consensus on Polymarket reflects tight uncertainty in forecast models for Jeddah's highest temperature on April 13, with implied odds clustered around 26–34°C outcomes and a slight edge to 34°C or higher at 25.5%, driven by the National Center for Meteorology's recent observations of hazy skies and highs near 31°C over the past 48 hours—conditions suppressing solar heating via dust aerosols and high humidity along the Red Sea coast. Ensemble guidance from GFS and ECMWF models shows consensus near 31–32°C (88–89°F), tempered by sea breezes and lingering thunderstorm risks in the Makkah region, though climatological April highs averaging 32–35°C allow for upside variability. Watch NCM updates in the next 24 hours for refined convective outlooks before resolution.