Recent forecasts for Guangzhou indicate a daily minimum near 26–27°C on August 27 amid persistent monsoon moisture and variable cloud cover, with models showing modest spread due to uncertain nocturnal radiative cooling. Precipitation and thick cloud decks can suppress temperature drops by limiting longwave radiation loss, while brief clear intervals or stronger winds allow greater cooling toward the mid-20s. High humidity from the South China Sea further moderates extremes, keeping values well above historical cold outliers but below peak summer averages. Trader odds clustered around 21–28°C reflect this forecast uncertainty, as small shifts in steering patterns or timing of showers could tip the observed low by a degree or two before resolution.