Standardized Precipitation Index Table

East Central (S) Climate Division

Arizona, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of Mar. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.15 6.42 8.28 9.85 10.65 10.91 12.39 14.01 14.45 14.46 15.46 15.48 26.55 32.03 40.66 48.05 61.71 70.03 90.7 114.36
Accumulated Precipitation Departure from Normal (in.) 1.18 2.46 2.1 1.61 0.92 -0.21 -0.45 -1.83 -3.93 -4.28 -3.74 -4.54 0.36 0.85 0.54 -3.14 1.58 -10.13 -9.62 -6.19
Accumulated Precipitation Percent of Average 160 162 134 119 109 98 96 88 79 77 81 77 101 103 101 94 103 87 90 95
Accumulated Precipitation Percentile (non-exceedance) 81 84.3 76.1 70.2 63.7 54.1 51.3 39.7 23.6 21.5 25.5 21.1 55.5 57.7 55.3 38.3 58.5 18.6 23.6 34.7
Standardized Precipitation Index 0.88 1.01 0.71 0.53 0.35 0.1 0.03 -0.26 -0.72 -0.79 -0.66 -0.8 0.14 0.2 0.13 -0.3 0.22 -0.89 -0.72 -0.39