**Recent forecasts position 19–20°C as the most likely minimum temperatures for Incheon on September 24, 2026, aligning closely with the market’s heaviest weighting on those outcomes.** Multiple models and official guidance, including WeatherBug and Met Office runs, project overnight lows near 19–20°C (roughly 66–68°F) under partly cloudy skies and light northwest winds, following daytime highs in the mid-20s °C. This reflects typical late-September transitional conditions in the Seoul metropolitan area, where lingering warm, humid air masses and limited radiational cooling under stable high pressure keep nighttime temperatures milder than the historical September average low near 17°C. **No major cold-air intrusions or frontal passages are expected in the immediate forecast window, supporting the current trader consensus.** Recent observations from the Korea Meteorological Administration show minimums in the 18–20°C range over the prior nights, with dew points remaining elevated and winds light—factors that moderate overnight cooling. Updated model consensus through September 22–23 has shown little shift, reinforcing probabilities around the 19–20°C thresholds that resolve the market. Traders appear to be pricing in this stability while assigning lower weight to outliers below 18°C or above 21°C, which would require unexpected model divergence or rapid weather changes not currently indicated.