Standardized Precipitation Index Table

Central Coast Drainage Climate Division

California, 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.) 3.94 10.76 15.77 20.76 22.09 22.2 22.28 22.33 22.33 22.46 23.32 23.41 46.33 57.77 59.58 73.33 73.44 86.95 103.44 129.58
Accumulated Precipitation Departure from Normal (in.) 0.59 3.54 4.09 5.34 4.56 3.77 3.66 3.68 3.67 3.71 4.04 2.67 13.93 18.61 18.1 13.61 11.4 4.2 -0.11 5.17
Accumulated Precipitation Percent of Average 118 149 135 135 126 120 120 120 120 120 121 113 143 148 144 123 118 105 100 104
Accumulated Precipitation Percentile (non-exceedance) 68.3 81.9 78.2 81.7 77.9 74.3 73.9 74 73.9 74.1 75.2 68.8 91.9 95.6 95.2 86.3 82.5 63.8 51.7 63.5
Standardized Precipitation Index 0.48 0.91 0.78 0.9 0.77 0.65 0.64 0.64 0.64 0.65 0.68 0.49 1.4 1.71 1.66 1.1 0.94 0.35 0.04 0.35