Recent forecast consensus from models and agencies including the Korea Meteorological Administration points to a daytime maximum of 27–29°C in Incheon on August 30, aligning with the tightly bunched market odds. A developing weather system is expected to increase cloud cover and bring periods of rain, limiting solar heating and surface temperature rise compared with clearer late-August norms. Differentiation among the leading outcomes hinges on exact cloud thickness, precipitation timing, and boundary-layer mixing; thicker stratiform clouds or earlier rain would favor 27°C or below by suppressing insolation, while partial clearing in the afternoon could allow brief warming to 29°C. Historical climatology shows typical August highs near 29°C, but the current synoptic pattern favors modest cooling. Updated model runs and official briefings over the next 48 hours will refine these thresholds.