Recent observational data and forecast models from regional meteorological agencies point to radiative cooling under mostly clear to partly cloudy skies and light northerly winds as the main driver positioning 15°C as the dominant implied probability for Qingdao's September 10 minimum. Coastal influences from the Yellow Sea typically moderate extremes, yet current atmospheric stability has allowed temperatures to dip lower than the seasonal average low near 18–21°C. Model consensus shows limited disagreement on overnight trends, with no major frontal systems or precipitation expected to alter the trajectory before resolution. Official station readings, including those from Qingdao Jiaodong International Airport, will confirm the exact threshold.