I live in Barcelona, and do sections of the HRP now and then, as well as other walks in the Pyrenees.
I can tell you that 2008/9 winter has been very wet, with lots of snow, some records have been broken in fact.
This means that the snow will, in most likelyhood, remain at greater elevations for longer in the season this summer.
I don't know when you are planning to hike, but I guess this year you could expect to see snow at high altitudes right through the year, so be prepared for challenging conditions if you are coming this way for a hike this summer.
Have a look at my gear list (in profile) for some ideas of what I use in these conditions. I've modified a few things, of course, but its basically the same.
I hope this helps,