**Persistent marine layer and onshore flow from the Pacific are keeping San Francisco’s August 7 high temperature in the low-to-mid 70s, aligning with the market’s leading outcomes of 70–71°F (40.5%) and 72–73°F (23.5%).** National Weather Service point forecasts and recent model guidance indicate a high near 72°F under partly sunny to sunny conditions, supported by a moderate sea breeze that limits warming. Typical August climatology shows daily highs averaging around 69–70°F, with values rarely exceeding 75–79°F absent strong offshore flow or a pronounced heat dome. Recent developments include a broader warming trend across inland California, yet coastal observations and the persistent stratus deck have held the city’s maximums in check, consistent with historical patterns and current NWS/NOAA guidance. Traders appear to be weighting these official forecasts and the low likelihood of rapid model shifts on resolution day, resulting in the tight clustering around 70–73°F while assigning minimal probability to extremes above 75°F or below 68°F.