Forecast models from sources including the Korea Meteorological Administration and international agencies show Incheon and Seoul under mostly cloudy to partly cloudy conditions on September 26, with light easterly winds and minimal precipitation after overnight clearing. This setup supports a daytime maximum near 25–26°C, consistent with late-September climatology for the region and recent model runs projecting highs of 25.8°C at Incheon International Airport. Trader consensus, reflected in the 49.5% implied probability for 25°C, aligns with these stable atmospheric patterns and narrow uncertainty ranges in ensemble forecasts, while lower odds for 24°C or 27°C+ account for potential minor steering variations or localized urban heat effects that could shift the peak by 1°C.