**Forecast consensus for Beijing on October 16 centers on a high near 19°C under increasing cloud cover and northeasterly flow ahead of a frontal system.** Official and model guidance (GFS, ECMWF, and regional sources) shows daytime maxima constrained by overcast skies, light rain potential, and reduced insolation, with afternoon readings clustered around 17–19°C. This follows a warmer October 15 peak near 24–25°C. Market-implied odds favor 19–21°C because of typical model spread in boundary-layer mixing and exact cloud timing; the tight clustering of probabilities around these strikes reflects traders weighting the narrow range of plausible outcomes given current steering patterns and limited diurnal heating. Updated model runs and surface observations through the evening of October 15 will refine the exact peak before resolution.