Recent clearing skies following rainfall on September 25–26 have positioned Seoul and Incheon for stable conditions on the 27th, with official Korea Meteorological Administration guidance and multiple forecast models indicating a daytime high near 25–26°C under partly to mostly cloudy skies and light westerly winds. These temperatures align closely with late-September climatological averages for the region, where highs typically range 24–26°C absent strong synoptic forcing. Low precipitation chances and moderate humidity support limited diurnal warming, keeping outcomes above 27°C or below 24°C at low implied probabilities. Updated model runs through the weekend will refine any minor adjustments ahead of market resolution.