Recent official forecasts from multiple meteorological models indicate a high of 23–24°C in Busan on October 7 under clear skies and light northerly winds, driven by a stable high-pressure ridge suppressing cloud cover and moisture. This autumnal pattern, with dry air advection and minimal diurnal variation, aligns with historical early-October baselines near 23°C and explains the market's strong clustering around 24°C (55.5% implied probability) and 25°C (33%). Minor model spread in peak afternoon readings keeps 23°C viable at 10.5%, while probabilities for 26°C or higher remain low absent unexpected warming. Updated guidance from the Korea Meteorological Administration ahead of the date will provide the final observational benchmark for resolution.