Trader consensus on Polymarket reflects tight uncertainty in China Meteorological Administration (CMA) ensemble forecasts for Shenzhen's April 8 high temperature, clustering implied probabilities around 26–29°C amid typical early-April climatology of 25–28°C averages. Recent developments, including partly cloudy conditions and highs of 25–27°C over the past week, have steadied odds as global models like GFS and ECMWF show consensus peaks near 27°C, moderated by persistent high humidity (80–90%) and afternoon sea breezes from the South China Sea. Key differentiators include variable cloud cover—thicker layers favoring 26°C, sunnier intervals with urban heat island effects boosting toward 29°C—while 31°C+ remains lower due to historical rarity this early in spring. Updated CMA guidance and 00Z model runs expected tomorrow could sharpen the spread before resolution at Shenzhen Bao'an International Airport.