Recent forecasts from Taiwan's Central Weather Administration and international models indicate Taipei's overnight minimum on September 7 will likely settle between 22–25 °C under clearing skies and light northwesterly flow following widespread rain on the 6th. Radiative cooling after sunset, moderated by residual humidity near 80–90 % and urban heat effects, creates tight clustering around the 23–24 °C range that dominates market-implied odds. Slight model spreads in cloud timing and wind strength differentiate the leading 23 °C, 24 °C, and 25 °C bins, while historical September baselines and current steering patterns keep sub-22 °C or 26 °C+ outcomes at low probability. Updated CWA guidance and hourly observations on the morning of the 7th will resolve the narrow uncertainty.