**Overcast skies, high humidity, and light winds are expected to keep overnight radiative cooling limited, positioning the minimum temperature in Incheon around 23–24°C as the most probable outcome.** Multiple forecast models, including official guidance from the Korea Meteorological Administration, indicate a low near 22–24°C for August 30 under persistent cloud cover and 80–95% relative humidity, consistent with late-summer conditions where dew points remain close to surface temperatures. Recent model runs show only minor overnight dips to the low 20s °C, with no strong cold advection or clear-sky radiative cooling expected to push values significantly lower. Historical late-August climatology for the region supports typical minima in this range when marine influence and cloudiness dominate, aligning with the market’s heavy weighting toward 23°C and 24°C. Updated forecasts closer to the overnight period could refine these probabilities if any clearing or wind shifts occur.