Standardized Precipitation Index Table

Southeast (S) Climate Division

Arizona, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Jan. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.25 2.57 3.87 5.27 7.63 8.85 10.49 11.15 11.23 11.3 11.89 11.96 12.59 15.22 22.01 29.2 32.56 49.32 64 72.4
Accumulated Precipitation Departure from Normal (in.) 1.14 0.27 0.76 1.27 2.13 0.54 -0.62 -0.35 -0.5 -0.78 -1.07 -1.99 -4.48 -7.04 -5.91 -7.05 -9.34 -6.6 -5.92 -11.56
Accumulated Precipitation Percent of Average 204 112 124 132 139 106 94 97 96 94 92 86 74 68 79 81 78 88 92 86
Accumulated Precipitation Percentile (non-exceedance) 87.4 65.3 71.5 75.7 81.8 61.8 45.1 48.7 46.8 43.1 39.4 28.8 11.2 4.4 11 10.3 5.9 18.7 25 10.8
Standardized Precipitation Index 1.15 0.39 0.57 0.7 0.91 0.3 -0.12 -0.03 -0.08 -0.17 -0.27 -0.56 -1.21 -1.71 -1.23 -1.26 -1.56 -0.89 -0.67 -1.24