Recent forecasts from multiple models indicate Shanghai's overnight low on August 31 will likely fall in the mid-20s °C, driven by persistent cloud cover, scattered showers, and elevated humidity that limits radiative cooling. Consensus from sources such as the Met Office and regional models points to minima near 25–27 °C under variable southeast winds and light precipitation chances, consistent with late-summer climatology for the region. Market-implied odds cluster around 26–28 °C because small differences in forecast cloud timing or rainfall duration can shift the exact minimum by 1–2 °C; higher-probability outcomes above 32 °C reflect residual uncertainty in longer-range guidance but diverge from current observational trends and short-term model runs. Updated model outputs and official agency briefings over the next 48 hours will further refine resolution thresholds.