**Forecast models and recent observations position 38°C or higher as the leading outcome for Jeddah’s maximum temperature on August 22, 2026, with market-implied odds of 73.5%.** Multiple sources, including Met Office, Worldmeteo, and WeatherBug, project daytime highs of 37–39°C (roughly 99–102°F) under partly cloudy to mostly sunny skies, consistent with the market’s strong tilt toward 38°C+. Jeddah’s Red Sea coastal setting features high solar insolation, minimal rainfall, and light northwesterly winds that limit cooling during peak summer. August climatology shows average highs near 38°C, and 2026 observations through mid-month have run about 2.3°C above the long-term normal (monthly mean 35.1°C versus 32.8°C), with several days already exceeding 39–40°C. No significant weather systems or increased cloud cover are expected to suppress temperatures tomorrow, keeping the distribution centered on the upper 30s. Lower outcomes (37°C or below) retain only modest probability (around 20% combined) if localized sea-breeze effects or brief cloud increases materialize, but current model consensus favors the hotter scenario. Traders appear to be weighting the ongoing above-normal heat and stable synoptic pattern when pricing these levels.