International progress in radar climatology in recent years is introduced ifrst in this paper, focusing on diurnal variations of convective storms and precipitation in different regions in the world based on radar climatology, and some research ifndings of radar climatology for diurnal variations of warm-season convective storms over contiguous North China (Beijing and its vicinity). Studies of radar climatology mainly reveal initiation, enhancement, and diurnal cycle and propagation of convection over different regions, which has a close relationship with solar heating, topographical forcing, prevailing winds, as well as synoptic and meso-scale systems. Statistics of identiifed and tracked 3D storm properties are another especial study of radar climatology, and are also presented. Studies and progress in effects of urbanization on convective storms and precipitation, and studies on convective weather over urban regions based on radar climatology are also reviewed. Finally, application prospects of radar climatology in analysis on convective mechanism and ifne-scale nowcasting of convective storms and precipitation over urban regions are discussed in the paper.