The thematic maps presented here are published annually in the hydro-climatological Atlas of the Grand-Duchy of Luxembourg. The project is a collaboration between the Luxemburg Institute of Science and Technology (LIST), the Administration de la gestion de l’eau (AGE) and the Administration des services techniques de l’agriculture (ASTA). The maps show the spatial distribution and temporal evolution of air temperature and precipitation providing an overview of the meteorological situation in Luxembourg. The basis of this documentation is a dense and continuously operating measurement network throughout the country. For regions in which measurements are unavailable, values were estimated by means of spatial interpolation (Inverse Distance Weighting). The current precipitation patterns are compared with a climatic reference period (30 years).