Traders have converged on 32°C as the highest temperature in Guangzhou on June 12 due to consistent outputs from operational forecast models and official observations confirming a peak under stable subtropical high-pressure conditions. This consensus reflects verified meteorological data, including surface observations and ensemble runs showing maximum values aligning precisely at that threshold amid typical early-summer humidity and light winds. Historical June climatology for the region supports such readings as common, with minimal day-to-day variability once the diurnal cycle is accounted for. Only an unexpected late-day surge from convective activity or a measurement revision at the primary station could alter the outcome, though current model agreement leaves little room for those shifts.