Traders assign near-certainty (99.7%) to a 26°C minimum in Hong Kong on June 14 because official Hong Kong Observatory observations recorded that exact low under cloudy conditions with light northeasterly winds and high humidity. June climatology in the region features overnight lows typically between 25–28°C, consistent with the seasonal forecast for above-normal temperatures amid a neutral-to-weak ENSO state. The dominant market-implied outcome reflects verified station data rather than models, leaving little room for revision unless post-event quality control adjusts the official reading. Minor uncertainty persists around microsite variations or rare reporting delays, but these rarely alter the daily minimum by more than 1°C.