Abstract: A refrigeration appliance includes a storage chamber, an evaporator that cools the storage chamber, and a processing unit configured to assign values for the air humidity in the storage chamber and an evaporation temperature of the evaporator to one another, at a given temperature of the storage chamber, under the assumption that the absolute water vapor content of the air of the storage chamber is the same as that of water-vapor-saturated air at the evaporation temperature. This assignment makes it possible on one hand to estimate the relative air humidity in the storage chamber on the basis of the temperatures, and on the other hand to control the air output temperature, at constant temperature in the storage chamber, in order to influence the air humidity therein.