rain on

rain (up)on someone or something

[for rain, or something similar] to fall on someone or something. (Upon is formal and less commonly used than on.) The ashes from the erupting volcano rained on all the people fleeing the village. It rained on the fields until they were flooded.
See also: on, rain
References in classic literature ?
In the morning I saw a red deer, a buck with a fine spread of antlers, standing in the rain on the top of the island; but he had scarce seen me rise from under my rock, before he trotted off upon the other side.
A drop of rain on her cheek recalled her thoughts from baffled hopes to ruined ribbons.
As she stood on the little grass plot before the house and felt the cold rain on her body a mad desire to run naked through the streets took possession of her.
A few minutes afterward, roused by a heavy blast of wind and rain on the canvas, she heard Billy softly groaning.