Treecipitation 

When it's recently been raining but isn't anymore, but then you walk under some trees and water is still dripping off the leaves, perhaps leaving you thinking it's still raining.

I thought it had started raining again, but it was just treecipitation

It stopped raining so I changed into dry clothes, and then immediately was treecipitated on.

Treecipitation by blackjackdavy March 4, 2010