Recent forecasts from sources including timeanddate and BBC Weather indicate a daily maximum near 31–33°C (88–91°F) for Chengdu on August 20, 2026, amid typical late-summer monsoon conditions with high humidity and scattered afternoon convection. Trader consensus clusters around 29–31°C because ensemble models show modest spread in peak heating driven by variable cloud cover, wind patterns, and the timing of any thundershowers, which can suppress or enhance surface temperatures by 1–2°C. Historical August averages of 30–32°C highs provide baseline context, while the two-day lead time limits resolution of finer-scale variables such as urban heat-island effects or precise precipitation timing. Upcoming model runs from national meteorological centers will likely refine these probabilities before market close.