Official forecasts from the Korea Meteorological Administration and ensemble models indicate Seoul’s minimum temperature on June 11 will reach 16°C under stable early-summer conditions featuring light winds, high humidity near 90 percent overnight, and minimal cold-air advection. This aligns with climatological baselines of 15–17°C lows for early June and recent short-range guidance showing no intensification of cooling mechanisms. Traders assign 97.9 percent implied probability to 16°C because observed trends and model consensus leave little room for deviation below 15°C or above 17°C. An unexpected late-night radiative cooling spike or revised observational data could still shift the recorded minimum, though such changes appear unlikely before final verification.