Recent short-range model runs from the China Meteorological Administration and international ensembles converge on a Beijing high of 30–32°C for August 18, driven by typical late-summer patterns of moderate humidity, light southerly flow, and variable cloud cover with scattered showers that limit peak insolation. These conditions align with climatological normals near 30°C and suppress heating relative to clearer, drier setups, keeping the 31°C outcome at the head of trader consensus while the narrow 33°C probability reflects the low likelihood of stronger subsidence or reduced moisture. Minor model spread in boundary-layer mixing and timing of any showers creates the close contest between 31°C and 32°C, with no anomalous warm advection evident in current analyses to support higher thresholds.