Recent forecasts from sources including the China Meteorological Administration and numerical models indicate a high near 26–28°C for Beijing on September 27, with partly cloudy skies following overnight rain and thunderstorms on the 25th–26th. Northerly winds, reduced humidity after precipitation, and moderate solar insolation under clearing conditions support the tight clustering around 27–28°C. Model spreads arise from variations in cloud cover timing and boundary-layer mixing, while historical September maxima near 26°C provide context. Official station readings from the CMA will resolve the market, with any late-day warming or lingering moisture the main variables that could shift the peak by 1°C.