Recent forecasts from multiple models indicate Guangzhou's overnight low on October 15 will likely settle near 23–25°C under partly cloudy to overcast skies with light easterly winds. This range reflects typical mid-October subtropical conditions, where radiative cooling overnight is moderated by residual daytime heat and humidity rather than strong advection from a cold front. Clearer intervals could allow the temperature to dip toward 22°C or below through enhanced longwave radiation loss, while increased cloud cover or slight southerly flow would retain more heat and support readings around 25–26°C. Ensemble guidance shows minimal day-to-day trend shifts in the past 48 hours, leaving the market's clustered probabilities around 22–27°C consistent with forecast uncertainty bands and historical variability for the date.