Recent developments, including daytime thunderstorms and a passing trough, have kept Busan’s temperatures elevated through evening hours, with current readings near 20–22°C under clearing skies and northwest winds. Overnight radiative cooling under mostly clear conditions and drier air advection from the northwest are the main drivers pulling the minimum downward, yet coastal marine moderation and residual boundary-layer moisture limit how far temperatures can fall. Model consensus points to a low in the 18–19°C range, aligning with the tightly matched market-implied probabilities around those levels; slightly lower outcomes (14–17°C) remain plausible if winds strengthen or skies clear earlier than expected, while warmer readings would require persistent cloud cover or delayed clearing. Historical October minima for the city average near 16°C, providing context for the current elevated baseline. Official Korea Meteorological Administration observations through dawn will resolve the market.