Recent KMA and global ensemble forecasts indicate Seoul's July 16 maximum will hinge on the timing and extent of monsoon moisture and cloud cover, with consensus highs clustered near 29–30 °C. Diurnal heating under a strengthening subtropical ridge supports upper-20s readings, yet scattered showers or thicker stratiform clouds could cap the peak 1–2 °C lower by limiting insolation. Model spread arises mainly from the precise arrival of a weak frontal boundary and boundary-layer humidity, both of which remain sensitive to small shifts in steering flow. Traders therefore assign the highest implied probabilities to 29 °C and 30 °C while discounting extremes above 31 °C or below 27 °C. Updated model runs and KMA short-range guidance expected over the next 48 hours will narrow this range ahead of market resolution.