**Trader consensus at 100% for a 22°C high reflects the tight clustering of official forecasts and observational data for Seoul-Incheon on October 2, 2026.** High-pressure dominance has produced clear skies and light northerly winds, allowing typical autumn solar heating to reach afternoon maxima of 21–23°C according to multiple model runs and agency guidance. Historical climatology for early October (average highs near 21–22°C) further anchors expectations, with minimal model spread and no significant warm or cold advection signals. Only an unforecasted shift—such as thicker afternoon cloud cover suppressing insolation or a late surge in warmer southerly flow—could realistically alter the outcome before official verification.