Average Yearly Precipitation for Arizona

The tables below give yearly averages for rainfall and snowfall at cities, towns and parks in Arizona. While snowstorms are rare in many parts of the state, in northern Arizona, some precipitation during the year does fall as snow.

Each place has a total for the amount of precipitation it usually receives in a year.

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 annual 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 yearly precipitation

Days	Place	Inches	Milli­metres
60	Bisbee	17.1	435
69	Chiricahua National Monument	18.7	475
70	Coronado National Monument	20.8	527
58	Douglas	11.8	300
51	Green Valley	12.9	326
65	Nogales	16.1	409
33	Organ Pipe Cactus Monument	9.3	236
51	Sierra Vista	13.0	330
53	Tombstone	13.2	336
47	Tucson	10.6	269

Western Arizona

Annual averages for total rainfall

Days	Place	Inches	Milli­metres
18	Bullhead City	5.4	137
40	Kingman	8.0	203
19	Lake Havasu City	4.2	106
17	Parker	4.6	116
17	Yuma	3.3	83

Phoenix Area

Average amount of precipitation a year

Days	Place	Inches	Milli­metres
40	Apache Junction	12.6	319
34	Mesa	8.7	220
33	Phoenix	7.2	183
34	Scottsdale	8.7	222
30	South Phoenix	7.5	189
34	Tempe	8.8	224

Central Arizona

Annual precipitation totals

Days	Place	Inches	Milli­metres
31	Casa Grande	7.9	201
58	Globe	15.6	397
78	Greer	19.3	490
64	Jerome	17.7	450
58	Painted Desert National Park	10.0	253
62	Payson	19.8	504
62	Petrified Forest National Park	9.6	244
63	Prescott	16.5	418
55	Sedona	17.1	435
82	Show Low	15.7	399
38	Stewart Mountain	11.9	301
31	Wickenburg	10.9	278

Northern Arizona

Total precipitation during a year

Days	Place	Inches	Milli­metres
52	Canyon de Chelly	8.8	222
82	Flagstaff	20.5	521
64	Grand Canyon Village	15.4	390
47	Page	6.9	175
53	Pipe Springs Monument	11.4	290
73	Williams	21.6	549