Recent forecasts from multiple models converge on a Guangzhou minimum near 26°C for September 7, supported by persistent high humidity, cloud cover, and scattered thunderstorms that limit nocturnal radiative cooling in the subtropical monsoon regime. Recent days have featured lows of 24–26°C amid ongoing rain, with daytime maxima around 32–34°C; these conditions suppress the typical seasonal drop toward the 24.8°C September climatological average. Trader-implied odds clustered tightly between 25–27°C reflect genuine forecast uncertainty in precipitation timing and boundary-layer moisture, which can shift overnight lows by 1–2°C depending on model runs. Updated guidance from agencies such as the China Meteorological Administration will provide the final inputs before resolution.