Recent clear skies and strong radiative cooling under calm conditions have driven Taipei's overnight minimums to 16.8°C in northern districts like Beitou, with urban stations likely recording 17–19°C as the daily low on October 13. Subtropical autumn patterns, reduced moisture, and light easterly flow favor rapid evening temperature drops after daytime highs near 33–35°C, aligning trader consensus with 19–20°C outcomes. Central Weather Administration observations and model guidance confirm minimal cloud cover and stable high pressure, limiting warming overnight while historical mid-October baselines show typical lows of 20–22°C. Updated station data and any late-day revisions remain key near-term factors for resolution.