Official Hong Kong Observatory forecasts for October 3 project a minimum of 27°C amid east to northeasterly flow from the northeast monsoon, with mainly cloudy skies, occasional showers, and possible thunderstorms moderating overnight cooling. Multiple model runs and regional outlooks indicate urban lows clustering between 25–27°C due to persistent humidity near 70–95% and limited radiational cooling under cloud cover. This scientific consensus, reinforced by recent monsoon reinforcement arriving Sunday night, underpins the dominant 26°C market-implied probability. Traders monitor the next HKO update and any model shifts in steering patterns or precipitation timing for potential adjustments before resolution.