**Trader sentiment for Taipei's August 30 minimum temperature reflects genuine forecast uncertainty in a humid subtropical summer setting, with probabilities clustered around 24–28°C and a notable share on 31°C or higher.** Official Central Weather Administration guidance and multiple models point to a nighttime low near 26–27°C under partly cloudy to mostly cloudy skies, following daytime highs of 33–34°C and scattered afternoon showers or thunderstorms driven by a low-pressure system and southwesterly moisture flow. This pattern limits strong radiative cooling overnight because persistent humidity (often 75–90%) and cloud cover trap heat near the surface, while light winds reduce mixing. Historical August climatology for Taipei shows typical overnight minima of 25–27°C, but variations arise from exact cloud timing, shower placement, and urban heat island effects within the Taipei Basin. Differing outcomes hinge on whether clearer breaks allow more cooling toward 24–25°C or if thicker clouds and higher dew points keep readings elevated near 28–30°C. New model runs and the next CWA update will likely refine the precise threshold as the 24-hour window closes.