A nice looking overhang very close to the parking of La Croix Saint-Jérôme. There are several interesting lines on this block. This one has a lying start underneath the overhang and traverses to the right, where you top out on the nose. Nice one for the hot summer days!
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.