Meteo-pi

Meteo-Pi is a connectivity device to allow you to connect your favorite Davis® weather station to Raspberry Pi mini computer.

Meteo-Pi also offers some important features:

LED indicators on the µHAT board provide a constant visual indication of communication between the console and Pi
All Raspberry Pi computers are green in the sense that they have very low power consumption. A Pi can be left running 24/7 and feeding your weather data up to the Internet while consuming no more electrical power than a small mains LED light
RTC: Meteo-Pi has a battery-backed real-time clock so that accurate time can be maintained on the Pi even after a mains outage
There is full electrical isolation between console and Pi so issues like ground loops leading to spurious readings cannot occur. This makes Meteo-Pi especially suitable for cabled VP2 installations. (Of course, Meteo-Pi works perfectly well with wireless stations too.)
Zero configuration required during set-up
No USB connection is involved, so potential issues like USB dropout, USB drivers, a separate USB hub etc are not relevant