Average Yearly Precipitation for Arizona

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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. Most places also have information on the number of days with wet weather. This includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The annual precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

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
66 Bisbee 19.1 484
74 Chiricahua National Monument 20.7 526
73 Coronado National Monument 22.0 558
54 Green Valley 14.2 360
65 Nogales 18.1 458
37 Organ Pipe Cactus Monument 10.3 260
54 Sierra Vista 14.2 361
52 Tombstone 14.1 359
48 Tucson 11.6 295

Western Arizona

Annual averages for total rainfall
Days Place Inches Millimetres
21 Bullhead City   6.0 152
  – Kingman   8.4 213
18 Lake Havasu City   3.8   98
18 Parker   5.1 129
18 Yuma   3.3   84

Phoenix Area

Average amount of precipitation a year
Days Place Inches Millimetres
42 Apache Junction 13.3 337
36 Mesa   9.5 241
30 Phoenix   8.2 208
32 South Phoenix   8.4 214
37 Tempe   9.3 237

Central Arizona

Annual precipitation totals
Days Place Inches Millimetres
34 Casa Grande   9.0 230
53 Globe 16.8 425
62 Jerome 18.7 475
59 Painted Desert National Park 10.8 275
65 Payson 21.3 542
66 Petrified Forest National Park 10.5 266
64 Prescott 18.0 456
57 Sedona 18.5 470
41 Stewart Mountain 13.3 339
39 Wickenburg 12.2 309

Northern Arizona

Total precipitation during a year
Days Place Inches Millimetres
57 Canyon de Chelly   9.6 243
88 Flagstaff 21.9 555
69 Grand Canyon Village 15.9 405
16 Monument Valley   5.2 133
48 Page   6.8 173
53 Pipe Springs Monument 11.0 278
72 Williams 22.3 567
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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