Recent forecasts for Shanghai indicate a minimum temperature near 25–26°C on August 13, driven by persistent summer monsoon conditions featuring high humidity, cloud cover, and scattered showers that limit overnight radiative cooling. Official guidance from regional models shows daytime highs of 30–34°C with nighttime lows moderated by southeasterly flow and typical August baseline values around 25°C. These atmospheric patterns explain trader consensus behind the leading 26°C outcome at 50% implied probability, while uncertainty in shower timing and exact model runs supports secondary odds on 25°C and 27°C. No anomalous cold advection or clear-sky developments have emerged to shift expectations.