Precipitation forecasting plays main role in the assessment of natural hazards, including floods and droughts. The purpose-oriented research is an applied research that examines the role of micro-physical schemas in predicting rainfall. At this research, the ability of Weather Research and Forecasting system (WRF) in forecasting of precipitation is examined. Four microphysics schemes of WRF were implemented to make four different runs of model. Forecasted data subsequently verified by precipitation data from TRMM. Verification method that was used is Pierson correlation coefficient. The results show that, Thompson, Lin .et. al, Kesller and WSM6 schemes respectively were in correlation with the TRMM with 0.38, .041, 0.39, and 0.39 Values.