Official observations from the National Weather Service station at San Francisco International Airport (KSFO), the market's resolution source via Weather Underground, confirm yesterday's high temperature reached 62-63°F, driving trader consensus to a 100% implied probability for that bin amid negligible volume on alternatives. Persistent onshore flow and thick marine stratus clouds suppressed solar heating, aligning with forecast models from NOAA that projected peaks in the low 60s under cool coastal conditions typical for early May, when climatological highs average 64-65°F but often dip lower with Pacific influence. Scenarios challenging this include rare post hoc data revisions from quality control, such as uncovering a brief higher spike, though preliminary airport readings are highly reliable; final NWS climatological summary expected soon will solidify resolution.