**Recent forecast updates for Shanghai point to overnight lows of 24–27°C on September 2, 2026, shaped by persistent cloud cover, high humidity, and expected rainfall that limit radiative cooling.** Multiple models, including hourly data from sources like Yr.no and daily summaries from LUFT TIME and Worldmeteo, show minimum temperatures holding in the mid-20s Celsius, with values such as 24.8°C or around 26–27°C (roughly 80°F) under overcast, moist conditions. Precipitation probabilities exceed 80–90% in several outlooks, driven by easterly or northeasterly flow and scattered thunderstorms, which trap heat near the surface. This setup favors the market's leading outcomes at 26°C (47.0% implied probability) and 27°C (37.5%), as traders weigh the balance between typical early-September baseline warmth and the insulating effects of clouds and rain. Lower outcomes like 25°C or below receive less weight because models show limited potential for clear-sky cooling, while higher readings (28°C+) remain possible only if winds or urban heat effects dominate. The close spread between the top two reflects genuine short-term forecast uncertainty in exact timing of any clearing or intensity of showers ahead of resolution.