Recent Korea Meteorological Administration forecasts and supporting ensemble models have converged on a Seoul minimum temperature of exactly 14 °C for May 17 under mostly clear skies and light winds. These conditions promote efficient radiational cooling with minimal urban heat retention, aligning with mid-May climatology where official records at the Seoul Central Observatory typically show overnight lows between 12 °C and 16 °C. Traders have priced this outcome at near-certainty given the short lead time and consistent guidance from official stations. The primary risk remains any unexpected increase in low-level cloud cover or wind overnight, which could trap heat and shift the recorded minimum to 15 °C or higher when final KMA observations between 3 a.m. and 9 a.m. local time are confirmed.