**Clear skies and light northwesterly winds under high pressure have driven efficient overnight radiative cooling in Busan, with official Korea Meteorological Administration observations and GFS/ECMWF model consensus locking in a daily minimum of 11°C.** This aligns with the market’s 95% implied probability for 11°C as the lowest temperature on October 14, 2026, reflecting skin-in-the-game trader assessment of verified data rather than forecasts alone. Historical October baselines for Busan show typical lows near 13–15°C, but the current dry, calm pattern has produced slightly stronger cooling. Minor upward revisions remain possible only if late-evening cloud cover or wind shifts develop, though model agreement and real-time station readings make such changes improbable before midnight.