Trader sentiment centers on forecast uncertainty for San Francisco’s August 7 high, with 70-71°F holding a narrow 38% edge over 72-73°F at 30.5% amid typical late-summer variability. Persistent marine layer stratus and onshore flow from the Pacific high are expected to moderate temperatures near the long-term August average of roughly 69-70°F, though any strengthening of the inland thermal low or delayed fog burn-off could allow modest warming into the low 70s. Official National Weather Service and model guidance emphasize the narrow range, with coastal sea-breeze effects and stratus timing as the key variables that will determine whether the daily maximum stays capped or edges higher before resolution.