Agro-meteorological conditions during the period of growth and development of sunflower have high influence on the crop's production. Due to the fact that lately on the international level some standardized indicators proposed by international scientific community and Meteorological World Organization (SPI, SPEI) are used, a large informational database was elaborated by using specialized software. The specific of the regional climate has determined the proposition of dry period Index (Izu), which, at the present, is used inclusively outside of the republic. Estimation of above-mentioned spatiotemporal indices has underlined the impact of dry periods on the productivity of sunflower.