Forecast models from Taiwan's Central Weather Administration and global ensembles point to a September 16 overnight low near 23–24°C in Taipei, driven by persistent northeasterly flow and moderate cloud cover that limits radiational cooling. These conditions align with the recent early-September cool anomaly, where daily averages dipped to historically low levels for the month. Slight differences among model runs—particularly in cloud thickness and wind speed overnight—create the tight clustering of market-implied probabilities around 23–26°C. Historical September minima average near 24°C, so traders weigh the balance between continued monsoon influence and any clearing that could allow marginally lower readings.