honestly - weewx took all of about an hour to get up and running from barebones RaspPi seriously...
Get your Pi setup with a static IP, apache, etc
then here's the hard bits:
wget -qO - WeeWX: GPG Keys | sudo apt-key add -
wget -qO - http://weewx.com/apt/weewx.list | sudo tee /etc/apt/sources.list.d/weewx.list
sudo apt-get update
sudo apt-get install weewx
As part of the install you will be asked a bunch of things that are needed for initial configuration ... Latitude/Longitude, type of Weather Station, and other bits ... I have a davis vantage pro2 so my config will be different than yours - but seriously its REALLY straight forward and easy to do 
There are a BUNCH of things you can customize and I threw together a quickie on my blog at someone's request to get some of the basic bits done ... its horribly written atm but I will tweak/edit it when I get some downtime: