A review of climatic-natural conditions of the Bydgoszcz Province has been presented. The characteristic of macroclimatic conditions have been made on the ground of archives and published elaborations located in the table of literature (references). These elaborations concern measurement results and chosen observations as well as components of climate (during the periods 1951-1979 and 1951-1980), which are important for plant production. Fundamental results have been presented on diagrams, maps and tables. An attempt of determination precipitation deficiency for chosen crop plants has been made in the final part of the paper for three sites representing respective parts of the region.