Open source, self hosted weather stations? - Divisions by zero

Does anyone know of a FOSS weather station? I have a Linux based home computer lab and I want to be able to track atmospheric pressure, temperature, and wind specifically. It would be nice to be able to detect rain as well if possible. So I need both a server to have on linux, PLUS the weather station. Does anyone have any recommendations? I strongly prefer large amounts of open documentation as well. Thank you!