Official observations from Seattle-Tacoma International Airport and National Weather Service data confirm a daily maximum of 66°F on October 3, 2026, under mostly clear skies with light northerly flow and no precipitation. This outcome aligns with model consensus from the preceding days and sits near the long-term average high of 64.7°F for the date while falling well below the all-time record of 80°F. Trader consensus at 100% for the 66-67°F bin reflects the finality of post-event verification, with negligible probability assigned to other ranges. Only a significant revision to the official climatological record or use of an atypical measurement station could alter resolution, though such adjustments remain exceedingly rare once preliminary local climatological data are released.