**Current forecasts for Jeddah on August 29, 2026, point to an overnight low in the 28–31°C range, consistent with the market’s clustered probabilities around 26–31°C.** Authoritative model outputs and station data show the daily minimum typically occurring in the early morning hours under clear to partly cloudy skies, with minimal overnight cooling due to the city’s Red Sea coastal setting, persistently high humidity (often 70–85%), and light winds. Key scientific drivers include the moderating effect of the warm Red Sea surface temperatures (near 31°C in August), which limit radiative cooling, combined with stable high-pressure conditions that suppress cloud cover and keep dew points elevated. Recent late-August observations at Jeddah stations have recorded minima between 28.6°C and 33°C, reflecting normal inter-day variability from subtle shifts in wind direction or boundary-layer mixing. Model consensus supports a low near 29–30°C, but small differences in predicted wind speeds or humidity can shift the exact reading by 1–2°C. The tight spread in market-implied odds around 26–31°C captures genuine uncertainty in the precise minimum recorded at the official station, including resolution criteria tied to the lowest hourly or instantaneous value. No major synoptic changes (such as stronger onshore flow or transient moisture) have altered the outlook in the past 24–48 hours, keeping trader focus on fine-scale forecast adjustments expected from updated runs.