Current short-range forecasts from multiple models indicate Busan overnight lows on September 3 near 23–25 °C under partly cloudy to overcast conditions with light northeasterly flow and modest precipitation chances, keeping the expected minimum squarely in the mid-20s range. This positioning reflects the lingering influence of a warm, humid late-summer air mass typical for early September in the region, where climatological overnight averages sit around 21 °C but recent days have run several degrees above normal. The near-even market-implied odds between sub-20 °C and 30 °C+ outcomes, alongside clustered probabilities for 24–27 °C, capture the genuine uncertainty in how much radiational cooling will occur overnight under variable cloud cover and whether any residual moisture or wind shifts could nudge the minimum by 1–2 °C. Updated model runs and official Korea Meteorological Administration guidance over the next 48 hours will provide the key data points for resolution.