**Trader consensus on the Shanghai lowest-temperature market for August 26, 2026, centers on 27 °C (69.5 % implied probability) and 26 °C (22.5 %), reflecting model agreement that overnight lows will settle near the late-August climatological average.** August in Shanghai features high humidity and typical daily minimums of 25–27 °C under the influence of the subtropical monsoon regime. Current extended forecasts from multiple sources project an overnight low of 26–27 °C (roughly 78–81 °F) for the night of the 25th–26th, consistent with recent days when Shanghai recorded a 27 °C minimum. Clear to partly cloudy conditions and light winds are expected to allow modest radiational cooling, but elevated moisture content prevents deeper drops below 25 °C. No strong cold-air advection or typhoon-related cooling is indicated in the near-term guidance, keeping the distribution tightly clustered around the historical baseline. The modest probability assigned to 26 °C versus 27 °C captures residual uncertainty in the precise timing of the minimum and minor model spread between runs. Updated numerical weather prediction outputs and official observations from the China Meteorological Administration over the next 24 hours remain the key near-term drivers that could shift these market-implied odds.