Which one is colder, Datong or Taiyuan?

Datong is cold. The coldest winter in Taiyuan may be the normal weather in Datong. Datong is located at the intersection of temperate monsoon climate and temperate continental climate. It is generally dry, with low temperatures and little rain. Winter is dry and cold. The lowest temperature at night can drop to about minus 20 degrees. In winter, the daytime temperature is about minus 5 degrees, accompanied by biting cold winds. However, the coldest is about 3 weeks.