Persistent southwest monsoon flow and an associated low-pressure system are sustaining cloudy skies, showers, and elevated winds over northern Taiwan through August 24, limiting both daytime heating and nocturnal radiative cooling. Central Weather Administration guidance and ensemble models indicate overnight lows near the 25–26 °C climatological baseline for late August, with modest spread arising from variable rainfall timing and wind gusts that could either enhance mixing or allow brief clear spells. The closely balanced market odds between sub-22 °C and 31 °C+ outcomes reflect trader emphasis on these short-term meteorological uncertainties rather than any sustained cool or heat anomaly, with resolution hinging on the precise minimum recorded at official Taipei stations before the pattern shifts toward more typical afternoon convection.