Trader consensus on Polymarket heavily favors a Beijing high of 19°C at 40.5% implied probability, driven by the latest ECMWF and GFS ensemble forecasts projecting afternoon peaks around 18-20°C under clear skies and light southerly winds. Recent observations show March 23 highs near 17°C with mild advection from the south boosting spring warmup, aligning with seasonal norms of 12-15°C but elevated by persistent high-pressure ridging over eastern China. Lower odds for cooler outcomes like 15°C or below (25.5%) reflect low precipitation risk per CMA updates, while extremes like 25°C+ remain fringe due to model convergence on moderate instability; traders eye final hourly guidance from local stations for resolution.