Current forecasts from the Korea Meteorological Administration and global models indicate an overnight low near 25–26°C for Incheon on August 26, driven by a persistent warm, humid summer air mass with limited radiative cooling under partly cloudy skies and light winds. Late-August climatology for the region shows typical minimums of 20–24°C, but recent days have trended warmer with dew points supporting elevated nighttime temperatures and no incoming cold front or typhoon influence to accelerate cooling. Traders assign the highest implied probabilities to 25–26°C outcomes, consistent with ensemble consensus and the absence of model runs projecting sharper drops below 24°C. Updated short-range guidance and any overnight observations will refine these probabilities ahead of resolution.