The present work has the objective of analyzing the influence of rainfall distribution in Tupanciretã / RS municipality in soybean production between 2014 and 2015. For the development of this work, the data published daily by the Cooperativa Agrícola Tupanciretã - AGROPAN, of eight pluviometers located in strategic points in the municipality. The data of agricultural production were obtained from public agencies such as the National Supply Company - CONAB, the Technical Assistance and Rural Extension Company of the Government of the State of Rio Grande do Sul - EMATER / RS, the Brazilian Agricultural Research Corporation - EMPRAPA and the Brazilian Institute of Geography and Statistics - IBGE. In this way