**Trader consensus has locked in 27°C as the lowest temperature recorded in Guangzhou on August 24, 2026, at near-certain implied probability.** This positioning reflects real-time observational data from local weather stations, which recorded an overnight minimum of approximately 26.6–27°C amid persistent cloud cover, high humidity near 90%, and periods of moderate to heavy rain from thunderstorms. In Guangzhou’s subtropical monsoon climate, such conditions suppress nocturnal radiative cooling by trapping heat and limiting clear-sky temperature drops, aligning closely with the long-term August average low of roughly 25–26°C while preventing the cooler extremes seen in drier historical analogs. Recent developments, including active convective weather on the 23rd–24th that maintained elevated dew points around 26°C, reinforced this outcome. Official monitoring agencies track these values using standardized minimum-temperature readings over the 24-hour period, and the market’s overwhelming alignment indicates traders view the data as conclusive within the resolution criteria. Realistic challenges would require an official data revision showing a confirmed low of 26°C or below at the primary station, perhaps from a brief clear interval or localized microclimate effect not captured in initial reports. However, given the consistency across multiple sources and the absence of any such update as of August 25, such a shift remains highly improbable.