San Francisco's measured high temperature on July 31 reached 72–73°F, aligning with the market's complete consensus. This outcome reflects the city's typical summer regime driven by the persistent marine layer and onshore flow from the Pacific, which caps daytime warming near the coast. Official observations from stations such as San Francisco International Airport recorded values within this narrow band, consistent with July climatology showing average highs of 70–72°F and limited variability. Model guidance from NOAA and similar agencies reinforced this range days in advance, with minimal spread across ensemble runs. A sudden breakdown of the marine inversion or strong offshore winds could have pushed readings higher, but no such synoptic shift materialized before the observation window closed.