Trees.

When a rain storm starts, the cover beneath a tree is dry. At least, the space beneath a tree is out of the direct force of the rain. You can stand under a tree and not get wet, but after a while, after the rain storm stops, the tree has soaked up all this water. It's leaves are like little dumping vessels of rain that tilt at the slightest of breezes. It really only rains under trees when the storm has passed.