**Recent forecasts from official and global models point to overnight lows in Taipei on September 1, 2026, clustered in the mid-20s °C, aligning with the market’s tight distribution around 25–27 °C.** Taiwan’s Central Weather Administration (CWA) and short-range guidance indicate nighttime temperatures of 26–30 °C, with several international models (including hourly ensembles) showing minima near 25–27 °C under partly to mostly cloudy skies and scattered showers. High humidity (often 90–99 %) and light easterly flow limit radiative cooling, while any evening or early-morning rain further moderates the drop. This late-summer pattern—near-normal temperatures amid lingering monsoon moisture and a passing low-pressure influence—explains why 27 °C, 26 °C, and 25 °C dominate trader probabilities, with finer distinctions hinging on exact cloud timing and localized urban effects. Updated model runs and CWA briefings in the final 24–48 hours before midnight local time will likely refine the precise minimum.