Official National Weather Service observations from Los Angeles International Airport recorded a maximum of 69°F on October 12, 2026, aligning precisely with the market's 68-69°F outcome at 100% implied probability. This cooler-than-normal reading (versus the 1991-2020 average high of 75°F) resulted from marine layer influence, light rain totaling 0.11 inches, fog, and onshore flow that suppressed daytime heating. Trader consensus reflects the finality of post-event data releases, with resolution criteria tied to verified station maxima. Realistic challenges would require discrepancies in the designated official source, such as a non-airport urban station reporting higher values or revisions to preliminary climate summaries, though such adjustments are rare once NWS final data are issued.