The occurrence and fate of landslides are, among other factors, controlled by the shear strength of the materials involved and by how this strength changes during the landslide process. Temperature affects the strength of pure clays according to their mineralogy, stress history, and hydro-mechanical boundary conditions. However, natural soils often consist of heterogeneous mixtures of various clay and non-clay minerals. The effect of temperature on the residual shear strength of low-plasticity soils, in particular, remains poorly understood.