SiCLIMA (Sistema de Información Climática de Aragón) is a high-resolution climatic gridded dataset for Aragón (northeast Spain) covering daily maximum and minimum temperatures and precipitation for the 1950-2020 period, at a spatial resolution of 500x500 m. Daily estimates for all grid points were computed from raw data of more than 3 000 weather stations provided by national and regional meteorological services: Spanish Meteorological Agency, the Ministry of Agriculture, Fisheries and Food, the Meteorological Service of Catalonia, the Government of Navarra, and the Automatic Hydrological Information Systems (SAIHs) from the basins of Ebro, Júcar, Tajo, and Duero rivers. Methodological procedures for quality control, gap filling and gridding were applied following Serrano-Notivoli et al. (2017 and 2019) (https://doi.org/10.5194/essd-9-721-2017 and https://doi.org/10.5194/essd-11-1171-2019).