Trader consensus has converged on a 28°C high for Shanghai on May 31 due to the latest consensus from numerical weather prediction models, which project peak afternoon temperatures aligning precisely with this threshold under prevailing subtropical high-pressure conditions and moderate southerly flow. Official monitoring from agencies such as the China Meteorological Administration indicates stable atmospheric profiles with limited diurnal heating potential, consistent with late-May climatology where daily maxima typically range 25–30°C. Recent satellite and surface observations confirm minimal deviation from these guidance runs. A sudden shift in cloud cover, localized convective activity, or revised model initialization could alter the outcome, though current data show low uncertainty in the near-term forecast.