Standardized Precipitation Index Table

Southern Climate Division

New Jersey, Climate Division 02

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.) 8.31 10.02 16.05 24.37 26.95 28.37 36.09 39.57 45.08 48.49 50.45 56.14 63.49 77.93 98.11 113.51 141.46 195.59 242.11 303.85
Accumulated Precipitation Departure from Normal (in.) 4.36 2.97 5.55 10.09 9.4 7.39 11.52 10.4 11.36 11.03 9.4 11.46 8.36 12.3 8.8 3.18 7.43 16.87 18.86 36.03
Accumulated Precipitation Percent of Average 210 142 153 171 154 135 147 136 134 129 123 126 115 119 110 103 106 109 108 113
Accumulated Precipitation Percentile (non-exceedance) 98.7 91.6 98 99.6 98.4 94.9 98.5 96.6 97.1 96.2 93 95.6 89.2 93 83.3 63.5 75.6 90.4 89.9 98.3
Standardized Precipitation Index 2.23 1.38 2.05 2.62 2.15 1.64 2.18 1.82 1.9 1.77 1.48 1.71 1.24 1.48 0.96 0.34 0.69 1.31 1.27 2.13