Ongoing summer heat across the Korean Peninsula, driven by persistent high-pressure systems and elevated humidity, keeps overnight lows elevated, with recent KMA observations and short-range model runs pointing to minimum temperatures near 24–26°C in the Incheon/Seoul area. Diurnal cooling rates depend on factors such as boundary-layer mixing, cloud cover, and urban heat retention, which can shift the recorded low by 1–2°C between adjacent nights. Trader sentiment clusters tightly around 25°C and 26°C because ensemble forecasts show only modest day-to-day variability this close to the event, with limited scope for stronger nocturnal radiational cooling or an unexpected marine breeze to push values significantly lower or higher. Updated model guidance and official KMA morning-low bulletins over the next 48 hours will likely refine these market-implied probabilities.