In order to design and plan for the next generation wireless communications system, for the channel, it is important to use a suitable model to predict appropriate and optimum frequencies. This paper is regarded as one of the few kinds of research in Iraq that deals with Millimeter-wave (Mm-waves) communication channels especially for Kut city which is located in eastern Iraq, on the left bank of the Tigris River, approximately 160 kilometers (99 miles) south of capital city Baghdad. In this article, different impacts of weather conditions on the strength of the transmitted signal in different environments and scenarios are presented. Moreover, the behavior of the millimeter-wave under the influence of many obstacles as it travels through the free space and atmosphere was studied. An NYUSIM simulator package is used to predict the performance of the channel. Two frequencies were used, 38 GHz and 60 GHz to test the channel performance and which frequency is best suited for Kut City environment. The weather database was real and actual obtained from the Iraqi weather reports authority. Moreover, the technical parameters of the mobile communications companies for 5G networks in Kut city were obtained and used via NYUSIM. The simulation result showed an agreement with the 38 GHz for its lower path loss and acceptable received power.