Trader consensus has coalesced around a 72-73°F high for San Francisco on October 1 because official observations from National Weather Service stations aligned with that narrow range amid typical early-autumn marine-layer influence and moderate onshore flow. Forecasts issued the prior day projected daytime maxima in the mid-60s to low-70s under partly cloudy skies, consistent with the 1991–2020 climatological average high of 71.5°F and recent analogs such as the 72°F reading recorded in 2025. With the date now passed, real-time station data and preliminary summaries leave virtually no room for deviation into higher or lower bins. Only an unlikely post-analysis correction by NOAA or an unrecognized microclimate outlier at the official reporting site could shift the recorded maximum outside 72-73°F.