Forecast models from multiple sources indicate Shenzhen's minimum temperature on September 25 will likely settle near 25–26°C under partly cloudy skies with light easterly winds and minimal overnight radiative cooling. Subtropical monsoon influences and seasonal sea-surface temperatures maintain this range, consistent with historical September baselines around 24–25°C. The market's even split between 21°C-or-below and 31°C-or-higher outcomes at 50% each, alongside uniform 20% probabilities for intermediate values, reflects genuine near-term uncertainty in cloud cover, humidity, and any late-arriving frontal influences that could shift the overnight low by a few degrees. Updated model runs closer to the date will clarify resolution thresholds.