**Clear skies and typical summer conditions support a minimum temperature around 26–28°C for Incheon on August 8, 2026, with market-implied probabilities clustered tightly around these outcomes due to forecast uncertainty in nighttime cooling.** Official guidance from the Korea Meteorological Administration indicates predominantly clear weather with light easterly winds and high daytime humidity, limiting radiative cooling overnight. Incheon's coastal location moderates extremes compared to inland Seoul, where the urban heat island effect can add 1–2°C. Key variables differentiating the 26°C, 27°C, and 28°C buckets include minor differences in cloud cover (even thin high clouds reduce cooling), wind speeds (calmer conditions favor lower readings), and exact humidity profiles, all of which short-range models resolve with only modest spread this close to the date. Recent observations show consistent highs near 34–35°C and overnight lows in the mid-to-upper 20s under similar patterns, aligning with climatological August averages. The closely matched leading probabilities reflect traders weighing these subtle atmospheric details against the potential for small model revisions before resolution.