**Current numerical weather prediction models, including those from agencies like the Korea Meteorological Administration, indicate overnight lows for Busan on August 30 near 25–26°C amid ongoing humid conditions and scattered thunderstorm activity.** This aligns with the closely bunched market probabilities, where 22°C or below leads modestly at 38% but outcomes from 23–26°C cluster tightly, reflecting trader assessment of forecast spread rather than a single deterministic outcome. High humidity (often 85–92%) and cloud cover limit radiative cooling after sunset, as water vapor and clouds trap heat near the surface. Light southwesterly winds further moderate temperature drops. Any breaks in cloudiness or reduced precipitation could allow slightly greater cooling toward the lower end of the distribution, consistent with historical August minima averaging 23–24°C. Conversely, persistent storms or marine influence from the nearby sea tend to hold minima above 25°C. Resolution hinges on the precise timing of any overnight clearing versus ongoing convective activity, with updated model runs and local observations expected to refine the range before the daily minimum is recorded.