**Trader consensus heavily favors a 28°C low on October 1, 2026, at 92% implied probability, aligning with the Hong Kong Observatory's official forecast range of 28–34°C under weak southwest flow and generally fine conditions with isolated showers.** Recent model runs and regional observations from late September, including overnight minima near 28–29°C at the Observatory and Chek Lap Kok, support persistence of this warm late-summer pattern into National Day. Typical October climatology shows average lows around 24–26°C, but the current high-pressure influence and limited northerly intrusion keep overnight cooling modest. The market reflects aggregated real-capital assessment of these stable atmospheric conditions. A stronger-than-expected easterly surge or prolonged heavy rain could lower readings toward 26–27°C, though current steering patterns and ensemble guidance make such shifts unlikely before resolution.