Ensemble forecast models from leading agencies like ECMWF and GFS show Shanghai's high temperature on March 29 clustering tightly around 18–19°C, driving trader consensus with 31% implied probability for 18°C and 24% for 19°C amid genuine uncertainty reflected in the close matchup. Recent model runs indicate mild southerly flow and above-normal sea surface temperatures in the East China Sea boosting potential warmth, counterbalanced by variable cloud cover and light precipitation risks that could cap peaks at 17–20°C. Shanghai's late-March climatology averages 13–15°C highs, but neutral ENSO conditions and a strengthening subtropical ridge support this elevated outlook. Traders eye daily updates from China Meteorological Administration for refinements, as small shifts in boundary layer mixing or frontal timing differentiate these outcomes.