Recent ensemble forecasts from the Korea Meteorological Administration and global models indicate Seoul’s overnight minimum on June 7 will most likely settle near 18–19 °C, reflecting light southerly flow, moderate humidity, and patchy cloud cover that limits radiative cooling. Early June climatology shows typical lows around 19 °C before the monsoon arrives, and current steering patterns lack strong cold-air advection or clear-sky conditions that would push readings notably lower. Minor model spread around these values, combined with the market’s tight clustering at 18 °C (27.5 %) and 19 °C (25.5 %), underscores the narrow scientific uncertainty remaining before official station observations finalize the outcome.