In this software the user can draw graphs and calculate efficiency criteria: d, NSE, RMSE, MBE, Pearson and Spearman. The user can compare outputs of KNN-WG with other models such as Lars-WG, SDSM, CMIP5, and etc. One of the most advantages of the KNN-WG software is that the user can select every number of variables (from 7 variables) to generate future data.