Trader consensus heavily favors a highest temperature of 76-77°F on August 11 in San Francisco, reflecting National Weather Service observations and regional model runs that captured peak afternoon readings under moderating onshore flow. A persistent marine layer and cool Pacific advection typically suppress highs near 70°F in August, yet localized warming from reduced cloud cover and lighter winds allowed temperatures to reach the mid-70s at official stations. This outcome aligns with climatological variability around the seasonal mean of roughly 69-72°F. Resolution hinges on verified maximums from primary reporting sites; alternative scenarios such as station-specific discrepancies or post-analysis revisions remain possible but low-probability given consistent data streams.