Recent short-range forecasts from the Korea Meteorological Administration and global models indicate a likely daily maximum in Seoul on June 18 between 27–29 °C under partly cloudy skies with light westerly winds and moderate humidity. Ensemble guidance shows limited spread due to stable synoptic patterns ahead of the East Asian monsoon onset, keeping probabilities tightly clustered around these values. Afternoon convective development or slightly stronger insolation could push readings toward 30 °C, while increased cloud cover would favor the lower end near 27 °C. Historical climatology for mid-June supports this narrow range, with traders weighting the latest model runs most heavily as resolution approaches.