Official National Weather Service observations from Los Angeles International Airport and downtown stations confirm the highest temperature on May 14 reached 68-69°F, driving trader consensus to near-certainty on this outcome amid persistent "May Gray" conditions. Thick stratocumulus clouds in the marine layer, fueled by cool ocean waters and strong northwest onshore flow, trapped cool moist air near the surface, preventing significant daytime heating after morning readings stalled around 63°F—well below the mid-May climatological average of 74°F. This aligns with historical patterns of coastal stratus advection during spring transitions. Scenarios challenging this include rare post hoc data audits revealing sensor errors or higher verified peaks at peripheral sites, though model ensembles and multi-station agreement make shifts unlikely; final daily climatological reports expected soon will solidify resolution.