In what ways do prevailing winds affect precipitation in a region

Prevailing winds influence wind movement from large bodies of water. Prevailing winds cause huge air masses, both warm and cool, to move. Prevailing winds controls the amount of water vapor in the air masses.

Explanation:

How do prevailing winds affect the amount of precipitation an area receives?

-prevailing winds move air masses, and and depending on the amount of water vapor in the air mass and the direction of the wind influences the amount of precipitation in an area.