The National Weather Service observation at Seattle-Tacoma International Airport recorded a maximum temperature of 67°F on October 8, 2026, at 4:17 PM local time, placing it squarely in the 66-67°F bin that commands 100% market-implied probability. This outcome aligned with model consensus showing a transient ridge of high pressure allowing afternoon sunshine to push readings 4°F above the 1991-2020 daily normal of 63°F under light winds and minimal cloud cover. Official climatological summaries confirm no higher reading occurred at the primary reporting station. Only an unforeseen revision to the preliminary data or use of an alternate station could realistically alter resolution, though such adjustments remain rare for daily maximum temperature records.