Recent forecasts for Taipei's overnight low on September 14 show notable spread across models, with official Central Weather Administration guidance pointing to 24–27°C amid northeasterly flow and scattered showers. Persistent cloud cover and high humidity limit radiative cooling at the surface, while variable rain timing and wind mixing in the boundary layer create uncertainty between 23–26°C outcomes. Traders assign near-equal weight to these bins because small differences in precipitation onset or clearing can shift the minimum by 1–2°C, consistent with typical late-summer monsoon-influenced conditions where historical September lows average near 24°C. Updated model runs tonight and early morning observations will likely refine the range before resolution.