San Francisco's coastal setting and persistent marine layer continue to moderate daytime highs, with National Weather Service guidance pointing to a peak near 72°F amid light westerly winds and partial clearing. Trader consensus clustering on the 68–71°F bins reflects model uncertainty over the strength of the sea breeze and any residual fog or stratus that could cap temperatures in the upper 60s versus allowing brief warming into the low 70s. Typical August climatology (average high ~69°F) and recent stable onshore flow support the tight spread between the two leading outcomes, while lower probabilities for 72–73°F or cooler bins capture the limited upside from stronger subsidence or downside from thicker marine influence before the afternoon peak.