Persistent marine layer influences and moderate onshore winds from the Pacific are anchoring San Francisco's July 25 high near seasonal norms of 68–72°F at the official SFO station, with National Weather Service guidance pointing to a peak around 70–72°F under partly sunny conditions. Model consensus highlights limited afternoon warming due to brisk westerly flow and coastal fog potential, though minor differences in marine layer depth or wind gusts could shift the exact maximum by a degree or two. Trader positioning clusters on 68–71°F ranges because historical July variability and short-term forecast spread leave room for either modest clearing or stronger onshore suppression, with resolution hinging on the verified daily maximum observation.