Standardized Precipitation Index Table

Western Climate Division

Kentucky, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of Nov. 2019)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 5.18 11.5 11.83 15.79 21.24 27.79 32.52 38.11 42.51 53.06 57.45 62.91 77.56 88.81 119.04 143 168.86 222.83 278.5 324.74
Accumulated Precipitation Departure from Normal (in.) 1.2 4.42 1.42 2.06 3.51 6 6.18 7.27 6.84 13.65 13.83 14.95 19.21 19.11 23.24 25.49 25.26 31.51 39.49 38.13
Accumulated Precipitation Percent of Average 130 162 114 115 120 128 123 124 119 135 132 131 133 127 124 122 118 116 117 113
Accumulated Precipitation Percentile (non-exceedance) 75.6 92.4 69 72.1 79.8 88.6 86.9 88.2 85.9 96.8 96.4 96.5 97.9 97.1 97.7 97.4 96.6 97.9 98.9 98
Standardized Precipitation Index 0.69 1.43 0.5 0.59 0.83 1.21 1.12 1.18 1.07 1.85 1.79 1.81 2.04 1.9 2 1.95 1.82 2.03 2.29 2.04