Recent model consensus from sources like GFS and ECMWF points to overnight lows near 22–23°C in Taipei on September 9, driven by light northeast winds, high humidity with dew points around 22°C, and variable cloud cover from scattered showers that limit radiative cooling. These conditions reflect typical late-summer subtropical patterns with no strong frontal systems or typhoon influences altering the steering flow. Minor forecast spreads arise from differences in predicted cloud thickness and timing of any rain, which can raise minima by 1–2°C under overcast skies versus clearer intervals. Trader odds cluster tightly around 20–24°C because small revisions in the next model runs or official Central Weather Administration observations could shift the exact minimum within that narrow range before resolution.