In reply to mc2006:
I don't quite get the point. In the Pyrenees you will never have snow in July on the approaches, but yes you will encounter patches of snow in shadowed areas above 2500m or on the glaciers. What I am trying to say is that it _is_the_point_ of Pyrenees in this time of season that you still need to have the crampons and ice pick in the backpack, although you'll have to use it only for very short time.
If you're looking for continous snow cover, then July is too late. However, if you don't have much experience, then July is a good month as it allows you to do a lot (early starts are a must!) with relatively good weather and some easy glaciers thrown in as a bonus.
Cheers
RS