Standardized Precipitation Index Table

Northeast Interior Basins Climate Division

California, Climate Division 03

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.) 4.36 8.55 10.98 12.35 13.75 14.19 15.37 16.44 16.48 18.31 20.34 20.79 36.81 45.45 51.16 64.23 67.07 79.77 94.49 119.87
Accumulated Precipitation Departure from Normal (in.) 1.76 3.01 2.02 0.26 -0.5 -1.31 -0.71 -0.01 -0.35 0.68 1.39 0.33 7.4 9.51 10.27 8.02 5.92 -1.71 -7.41 -2.49
Accumulated Precipitation Percent of Average 168 154 123 102 96 92 96 100 98 104 107 102 125 126 125 114 110 98 93 98
Accumulated Precipitation Percentile (non-exceedance) 86 85.7 72.6 57.4 51.2 44.8 49 54.2 51.6 59 63.4 56 85.3 87.4 88.4 78.6 72.4 46.5 30.6 45
Standardized Precipitation Index 1.08 1.07 0.6 0.19 0.03 -0.13 -0.02 0.11 0.04 0.23 0.34 0.15 1.05 1.15 1.19 0.79 0.59 -0.09 -0.51 -0.13