Recent National Weather Service and AccuWeather guidance for San Francisco on August 5, 2026, centers on a high near 72–74°F at official stations, reflecting a typical late-summer marine layer that advects cool, moist air onshore and caps daytime warming. Persistent onshore flow, coastal upwelling, and morning fog or low stratus have kept temperatures close to seasonal normals of about 70°F, preventing stronger inland heating from reaching the city. Model consensus shows limited afternoon clearing and modest warming potential, positioning the 72–73°F bin as the modal outcome while allowing modest probability for 74–75°F if the marine layer erodes earlier than expected. No anomalous heat wave or offshore wind event has developed in the past 48 hours to shift the distribution higher, consistent with the market’s heavy weighting toward the low-to-mid 70s.