Recent forecast guidance from the Korea Meteorological Administration and global models indicates daytime highs in Seoul on June 13 will likely peak between 26–28 °C under early-summer conditions with moderate humidity, variable afternoon cloud cover, and limited precipitation risk. This range aligns with the historical mid-June climatology of 27–29 °C average highs and explains why the market assigns the highest implied probabilities to 27 °C and 26 °C. No significant warm-air advection or blocking high is projected in the next 48 hours that would push temperatures toward 30 °C or above, while the absence of strong cold fronts keeps sub-25 °C outcomes unlikely. Updated model runs and official briefings expected tomorrow will provide the next key data points for traders.