Guia Clima is an agroclimatic monitoring system that provides, in real time, data on meteorological conditions (temperature, air humidity, etc.), information (averages, normals, etc.) and alerts (low air humidity, strong winds, frosts, etc.). Currently, Guia Clima operates with four meteorological stations: Dourados(2), Rio Brilhante and Ivinhema. However, there is a forecast for the installation of new stations in other places in Mato Grosso do Sul. Guia Clima presents statistics of the main meteorological elements of the stations, considering monthly periods. These statistics provide a panoramic view of climate behavior and can be used as parameters for designing projects and supporting decision-making. The water balance of this application is of the daily sequential type and is calculated based on soil retention curves, considering the Total Water Capacity in the Soil of the layer 0 to 1.0 m. It also considers that the soil had maximum water storage on the day before the beginning of the calculation. The calculation is performed for a period of 90 days and presents the results of the last seven days.