Sunshower

[1] A sunshower is usually a result of winds associated with a rain storm sometimes miles away, blowing the airborne raindrops into an area where there are no clouds.

Sometimes a sunshower is created when a single rain shower cloud passes overhead, and the Sun's angle keeps the sunlight from being obstructed by overhead clouds.

Sunshower conditions often lead to the appearance of a rainbow, if the sun is at a sufficiently low angle.

[1] Although the term "sunshower" is used in the United States, Canada, Australia, New Zealand, Ireland and the UK, it is rarely found in dictionaries.

[2][3][4] The phenomenon has a wide range of sometimes remarkably similar folkloric names in cultures around the world.