Is it cold in winter in Dandong?

The average annual temperature in Dandong is 6.8-8.7℃, and the temperature difference between north and south is about 2℃. Although winter is long, the severe cold period (the period when the daily average temperature is lower than-10℃) is short. Although it is hot in summer, the hot period (the average daily temperature is above 25℃) is short, generally about 20 days (from late July to mid-August).