The growing demand for local area communication are prominent for day-to-day activities, therefore, there is growing interest in optimizing the WLAN infrastructure so as to increase productivity and efficiency in the various school campuses, factories, hotels, among others. Regardless of the enormous benefits offered by WLANs, the environment, including building, trees, bushes, vegetation, climate, and interferences from other RF signals in which the WLAN operates play a critical role in defining the architecture and design of WLAN. In this paper, a mean path loss model was developed and compared with some well-known models and it showed some agreement indicating it can be used to effectively deploy WLAN infrastructure for effective coverage distance, improved client received signal quality, reliability of data transfer, and effective data rate on KNUST campus.