Abstract The North Atlantic storm track largely affects the regional weather and climate in Western Europe and the Eastern United States. While recent and projected changes in the storm track due to human emissions have been extensively studied, the stormsā response to natural forcings in past centuries is largely unknown. Using climate model simulations of the preāindustrial millennium, we find that natural forcings acted to intensify the summer storm track over multiācentennial timescales, with minor impacts on the winter storm track. In contrast to the humanāinduced larger warming of high latitudes relative to low latitudes, which has weakened the summer storm track, natural agents cooled high latitudes more, enhancing the meridional temperature gradient, which intensified the storm track. This study highlights the unprecedented impacts of human emissions relative to the last millenniumās natural forcing agents and the importance of including natural forcings in model projections.