Recent National Weather Service forecasts and ensemble model guidance indicate a high temperature near 69–72°F for San Francisco on August 11, driven by a persistent marine layer and moderate onshore flow that limits daytime heating along the coast. Typical August conditions feature a compressed marine layer with westerly winds advecting cooler Pacific air, keeping afternoon maxima close to the long-term average of 69°F, though brief clearing could allow slight warming into the low 70s. Trader consensus across the narrow 68–73°F range reflects uncertainty in the exact depth of the marine layer and any shortwave influences that could alter the inversion strength overnight. Updated model runs and NHC-adjacent regional guidance expected within the next 24 hours will likely refine these probabilities.