Recent cold front passage and strengthening northeast monsoon have driven overnight cooling across Hong Kong, with official guidance from the Hong Kong Observatory pointing to a minimum near 25 °C on October 5 amid partly cloudy skies and northerly winds of 3–4 Beaufort. This positions 25 °C and 24 °C as the dominant market outcomes, reflecting model consensus on radiative cooling under clearing conditions after earlier showers and the typical October diurnal range moderated by urban heat. Historical analogs show similar frontal intrusions often produce lows in the low-to-mid 20s, while stronger winds or lingering cloud cover could nudge readings slightly lower. Updated forecast runs and morning observations will refine resolution probabilities ahead of the daily minimum.