**Recent cold air advection from the north is the dominant driver behind the tight market split between a 9°C low (55.5% implied probability) and 8°C or below (50.0%).** Multiple short-range models show a modest temperature drop for Qingdao on October 14, with clear skies overnight promoting radiative cooling while southerly flow off the Yellow Sea provides marine moderation that limits how far inland chill penetrates. Hourly guidance from sources such as Yr.no indicates early-morning readings near 10–11°C, with some ensemble members dipping lower if winds remain light. Coastal sites typically run 2–4°C warmer than inland stations, creating the narrow band around 8–9°C that traders are pricing. Updated model runs and official China Meteorological Administration briefings expected overnight will likely resolve the remaining uncertainty before the market settles.