In this paper, we proposed the design and development of Portable Wireless Data Acquisition System (PWDAS) prototype for PV solar system with Real Time Clock (RTC). The wireless technology is very much easier to implement rather than wired system. Parameters like PV panel voltage, current and its surface temperature and the affected weather parameters using available and low cost sensors are considered. The designed PWDAS prototype is based on Arduino microcontroller boards, and NRF24L01 wireless transceiver modules. The aggregated data are presented in Excel using the PLX-DAQ data acquisition Excel Macro. The PLX-DAQ connects the Arduino control board and the computer by UART bus. The main goal of this research is to develop and implement a PLX-DAQ based wireless weather monitoring system using NRF24L01transceiver module. From the result obtained throughout the test and experiments carried out, data sent from the weather station were successfully received at the test station PC and reported to the PLX-DAQ Excel Macro using serial monitor of Arduino IDE.