Official forecasts from the Korea Meteorological Administration and ensemble models project a daily maximum of 20–22°C in Incheon on October 15, with peak readings most likely near 21°C amid southwesterly flow, partial cloud cover, and only light, localized showers that are unlikely to suppress afternoon warmth. This aligns with typical mid-October climatology for the region, where daytime highs average near 20°C before seasonal cooling accelerates. Trader consensus at 99.8% for 21°C reflects the narrow observed range in recent model runs and real-time station data. A sudden increase in cloud cover or heavier rainfall could cap the high below this threshold, while unexpected clearing might allow a brief spike to 22°C or higher.