Why is metal cold? Why is the metal surface still cold in very hot weather?

Because the metal has good thermal conductivity, when the human body comes into contact with the metal, the metal will absorb the human body heat from the contact part and transfer it to the surrounding low temperature environment. Because of the loss of heat, the human body feels that metal is colder. In very hot weather, the ambient temperature rarely exceeds 47 degrees, so the metal surface is still very cold.