Standardized Precipitation Index Table

Northern Plateau Climate Division

New York, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of May 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.77 5.52 8.71 12.02 15.98 19.89 24.93 32.75 36.73 40.94 44.36 50.24 64.62 77.27 103.52 125.64 154.17 205.92 254.88 296.65
Accumulated Precipitation Departure from Normal (in.) -1.08 -1.84 -2.04 -1.75 -1.25 -1.18 -0.17 3.57 3.39 3.51 2.72 4.46 8.07 10.4 11.99 13.02 16.91 22.98 26.32 22.44
Accumulated Precipitation Percent of Average 72 75 81 87 93 94 99 112 110 109 107 110 114 116 113 112 112 113 112 108
Accumulated Precipitation Percentile (non-exceedance) 27.4 21 20.2 26.6 35.1 37.2 50.1 80.5 77.7 78.2 72.3 81.5 92.6 95.5 93.6 93.8 95.3 96.9 96.6 91.8
Standardized Precipitation Index -0.6 -0.81 -0.83 -0.62 -0.38 -0.33 0 0.86 0.76 0.78 0.59 0.9 1.45 1.69 1.52 1.54 1.68 1.87 1.83 1.39