Standardized Precipitation Index Table

Eastern Plateau Climate Division

New York, 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.) 5.6 6.89 12.1 18.47 20.64 24.63 29.03 35.7 42.18 46.68 49.15 53.06 61.59 72.32 97.87 119.85 151.76 193.47 241.53 297.22
Accumulated Precipitation Departure from Normal (in.) 2.34 0.99 3.32 6.4 5.12 5.39 5.89 8.48 10.74 11.07 9.7 10.08 9.86 10.13 11.98 14.69 22.92 21.78 27.05 39.96
Accumulated Precipitation Percent of Average 172 117 138 153 133 128 125 131 134 131 125 123 119 116 114 114 118 113 113 116
Accumulated Precipitation Percentile (non-exceedance) 95.6 75.3 95.6 99.4 96.7 94.1 93.5 96.9 98.3 98.1 96.2 96.2 95.3 92.4 91.7 92.9 97.3 93.5 94.2 97.8
Standardized Precipitation Index 1.7 0.68 1.7 2.54 1.84 1.57 1.52 1.86 2.11 2.08 1.77 1.78 1.67 1.43 1.39 1.47 1.93 1.52 1.57 2.01