Traders see 27°C and 26°C as the most probable overnight lows in Taipei on August 22 because persistent high humidity, widespread cloud cover, and scattered thunderstorms limit radiative cooling under a typical late-summer monsoon pattern. Official forecasts from sources such as the Central Weather Administration and international models cluster between 24–26°C, with urban heat-island effects and light winds favoring the upper end of that range. The narrow spread between leading outcomes reflects genuine model uncertainty around exact timing and intensity of overnight rain, which can produce 1–2°C differences in minimum temperature depending on whether convection peaks before or after dawn.