What is the rainiest month in Phoenix?

March
The driest month in Phoenix is June with 0.09 inches of precipitation, and with 1.07 inches March is the wettest month.

Does it rain a lot in Arizona?

It doesn’t always rain in Arizona, but when it does, people pay attention — or at least they should. … Much of the state is sparsely vegetated due to receiving very little rainfall. The Phoenix area typically only receives about 8 inches of rain per year, while Tucson gets closer to 12.