Recent developments include a sharp cooldown following Seoul's record 30.1°C high on October 12, driven by a frontal system and northwest cold-air advection now bringing widespread rain to the region. Official forecasts from the Korea Meteorological Administration and models indicate a daytime high near 20–22°C for Incheon/Seoul on the 13th, with rain and cloud cover limiting solar heating while stronger winds enhance mixing. The narrow spread between 21°C and 22°C in market-implied odds reflects model sensitivity to exact timing of precipitation cessation and boundary-layer moisture, both of which can shift peak readings by 1°C. Historical October averages for the area hover around 18–20°C, making today's conditions slightly above normal yet far below the recent anomalous warmth. Updated model runs and surface observations through midday will clarify whether the high settles at the lower or upper end of that range.