Recent forecasts from multiple models, including GFS-based runs, indicate Shanghai's overnight low on October 8 will most likely reach 16–17°C under clear skies and light easterly winds. These conditions favor strong radiative cooling after daytime highs near 25°C, with minimal cloud cover or moisture to retain heat. Consistent model consensus and the absence of incoming weather systems have kept probabilities anchored on these values, though minor revisions in boundary-layer humidity or wind could shift the exact minimum by 1°C. Historical October climatology for Shanghai supports nighttime lows in this range during stable high-pressure regimes, aligning trader sentiment with the latest observational trends and short-range guidance.