Abstract: Based on the analysis of summer maximum temperature in Yueyang national basic weather station and 20 automatic stations in urban areas from 2016 to 2018, it was found that the daily maximum summer temperature in Yueyang national basic weather station was significantly lower than that of urban areas, which should not be used as the evaluation standard of high temperature weather in urban areas of Yueyang.Therefore, based on the statistical analysis of historical data, this study indicated two kinds of reference standards which were easy to operate and could accurately reflect the high temperature weather in Yueyang urban area in summer.