What are the annual rainfall patterns in a desert?

Question

What are the annual rainfall patterns in a desert?

Answer 1

Not sure what you mean by patterns, but in most cases deserts do have a "wet" season when the majority of the precipitation does fall.  By convention, a desert is defined as an area that receives an average of less than 10 inches of precipitation a year.

Answer 2

slim and none

it's a desert

and when it does break loose - it could cause a raging flood

because the waters run off - not soak into the ground

all the best