Abstract. The paper presents the results of measurements of silo wall pressure during the storage of wheat, barley and oats grain. The study was conducted on a test station. The test silo was filled with two layers of grain of different moisture content levels. The difference in the grain moisture content caused moisture diffusion and grain swelling, the result of which was an increase in grain pressure against the silo wall. It was found that the value of the initial wall pressure and its increase was related to the type of cereal (its physical properties), the moisture content of the grain layers, and the duration of storage. The greatest increase in the value of silo wall pressure was obtained for wheat (in the boundary layer the increase was 2.24-fold over 10 days with bottom layer moisture content of 16% and upper layer moisture of 7%), and the smallest one for oats (1.87-fold). The changes in the values of the silo wall pressure were described by means of regression equations.