What you will need:
1: A large bowl.
2: A glass mug (make sure it is bigger than the bowl).
3: A large rubber band.
4: Glade wrap.
Put the water in the medium size bowl and fill it quarter of the way.
Put the mug right side up in your bowl.
Put the glad wrap over the bowl then seal it with some string or some rubber bands.
Put the bowl in the sun and wait for something to happen.
The sun heated up the water and it evaporated up towards the glad wrap. Condensation formed on the glad wrap. When water vapour became heavy it dropped in to the cup like rain. (precipitation)