Persistent marine layer influence and onshore flow from the Pacific kept San Francisco's August 14 high tightly constrained near seasonal norms, with National Weather Service observations confirming a peak of 70–71°F at downtown stations. This outcome aligns with climatological baselines of 67–70°F for mid-August and recent model guidance from NOAA showing limited warming due to persistent stratus and modest 925 mb temperatures. Trader consensus at 100% reflects the closed observational record, leaving little room for revision. Only an undetected station anomaly or post hoc data adjustment could alter resolution, scenarios with negligible probability given multiple verified reporting sites.