Recent forecast guidance from the China Meteorological Administration indicates Shenzhen will reach a daily maximum of 26°C today, driven by persistent cloud cover, heavy rainfall from a developing low-pressure system, and high humidity near 80% that limits solar heating and enhances evaporative cooling. Southerly sea breezes further moderate surface temperatures across the Pearl River Delta, holding conditions below the mid-May climatological average of 29–30°C. Ensemble model runs show tight agreement on this outcome, with minimal spread in peak timing or intensity, supporting the overwhelming market-implied probability near 100% for exactly 26°C. Partial clearing in the afternoon could allow brief warming toward 27°C in isolated spots, though sustained showers make any deviation above that threshold highly unlikely before resolution based on official station data.