I am looking for a source of weather data for Europe. I use http://mesonet.agron.iastate.edu/cgi-bin/wms/goes/conus_vis.cgi? and http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi? for the US, but have been unable to find a source for Europe. I saw a similar question here: List of available online WMS services (Weather, Land Data, Place Names...), but it does not answer my question.
For the whole of Europe unlikely.... however
Northern Europe http://openmetoc.met.no/about.html
It may be possible to build up lots of individual countries (lots of searching required) but the UK for one is limited in one WMS Services and two 'public' access to the weather data.