Stable high-pressure conditions and clear skies across central China have driven Zhengzhou’s overnight minimum to 23°C on September 1, aligning with multiple official forecast models showing lows of 21–23°C under light northeast winds and low humidity. This consensus reflects typical early-September climatology for the region, where radiative cooling under cloud-free nights produces minima near the seasonal average without significant advection of cooler air. Trader certainty at 23°C stems from tight model agreement and the absence of any destabilizing factors such as frontal passage or increased cloud cover. Only a late surge in moisture or stronger winds could realistically shift the recorded low outside this narrow band before official observations finalize.