Average Precipitation for Arizona in May

The tables below give monthly averages for rainfall during May at cities, towns and parks in Arizona. In northern Arizona, some of the precipitation can fall as snow.

Each place has a total for the amount of precipitation it usually receives this month.

There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Southern Arizona, Western Arizona, Phoenix Area, Central Arizona, and Northern Arizona.

Southern Arizona

Average monthly precipitation in May

Days	Place	Inches	Milli­metres
1	Bisbee	0.3	7
2	Chiricahua National Monument	0.3	8
2	Coronado National Monument	0.2	6
1	Douglas	0.2	6
1	Green Valley	0.2	5
1	Nogales	0.2	4
1	Organ Pipe Cactus Monument	0.2	5
1	Sierra Vista	0.2	5
1	Tombstone	0.2	6
1	Tucson	0.2	5

Western Arizona

May averages for total rainfall

Days	Place	Inches	Milli­metres
0	Bullhead City	0.1	2
1	Kingman	0.1	2
0	Lake Havasu City	0.0	1
0	Parker	0.1	2
1	Yuma	0.1	2

Phoenix Area

Average amount of rain in May

Days	Place	Inches	Milli­metres
2	Apache Junction	0.3	7
1	Mesa	0.2	4
1	Phoenix	0.1	3
1	Scottsdale	0.2	4
1	South Phoenix	0.1	3
1	Tempe	0.2	5

Central Arizona

Precipitation totals for May

Days	Place	Inches	Milli­metres
1	Casa Grande	0.2	5
3	Globe	0.4	9
4	Greer	0.7	17
3	Jerome	0.5	13
3	Painted Desert National Park	0.5	12
3	Payson	0.5	14
4	Petrified Forest National Park	0.4	11
3	Prescott	0.5	13
3	Sedona	0.7	17
4	Show Low	0.6	16
1	Stewart Mountain	0.3	6
1	Wickenburg	0.2	5

Northern Arizona

Total precipitation during May

Days	Place	Inches	Milli­metres
3	Canyon de Chelly	0.5	13
5	Flagstaff	0.8	20
3	Grand Canyon Village	0.4	10
3	Page	0.4	11
4	Pipe Springs Monument	0.5	13
4	Williams	0.8	19