No, temperature does not have an effect on atomic mass. Atomic mass is a fundamental property of an atom and is defined as the mass of an individual atom of an element relative to a standard. It is determined by the number of protons and neutrons in the atomic nucleus.
Temperature, on the other hand, is a measure of the average kinetic energy of particles in a substance. It is not directly related to the atomic mass of individual atoms. While temperature can affect the behavior of atoms, such as their movement and interactions, it does not alter the fundamental atomic mass of an element.