Sit start under the nose, and reach up to the lip. Make a super cool mantle on the right hand side of the nose. OR... you can do the whole thing upside-down, feet-first, for a much higher grade and no extra reward. Why? ... because you can!
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.