Standardized Precipitation Index Table

North Central Climate Division

Arizona, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.66 3.78 4.66 4.92 5.12 6.43 7.83 8.37 8.42 9.48 9.48 13.37 20.02 24.18 31.33 36.97 44.6 54.06 68.68 88.05
Accumulated Precipitation Departure from Normal (in.) 0.99 0.47 -0.18 -0.98 -1.81 -1.89 -2.99 -4.43 -4.63 -3.95 -4.7 -2.32 -0.57 0.1 -0.13 -2.84 -2.59 -8.91 -10.17 -6.76
Accumulated Precipitation Percent of Average 160 114 96 83 74 77 72 65 65 71 67 85 97 100 100 93 95 86 87 93
Accumulated Precipitation Percentile (non-exceedance) 80.2 67 56.4 45.6 34.1 32.7 22.4 11.8 10.7 16 12.3 32.3 48.7 53.8 51.9 36.9 39.7 17.9 18 30
Standardized Precipitation Index 0.85 0.44 0.16 -0.11 -0.41 -0.45 -0.76 -1.18 -1.24 -1 -1.16 -0.46 -0.03 0.09 0.05 -0.33 -0.26 -0.92 -0.91 -0.53