Standardized Precipitation Index Table

Western Climate Division

Kentucky, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 6.08 16.99 20.99 27.31 31.82 37.93 43.86 44.02 50.94 52.32 57.72 61.41 76.93 87.06 108.78 136.67 153.07 205.93 259.09 316.93
Accumulated Precipitation Departure from Normal (in.) 1.5 7.88 7.03 9.58 9.83 11.61 13.61 10.68 14.27 12.29 13.62 13.27 14.88 12.67 12.59 14.26 8.86 13.66 18.83 28.65
Accumulated Precipitation Percent of Average 133 186 150 154 145 144 145 132 139 131 131 128 124 117 113 112 106 107 108 110
Accumulated Precipitation Percentile (non-exceedance) 79.3 98.5 95.1 96.9 95.9 96.8 97.5 93.8 97.1 94.4 95.5 94.8 95 90.3 86.6 87.6 75.1 81.3 85.9 92.7
Standardized Precipitation Index 0.82 2.17 1.66 1.86 1.74 1.85 1.96 1.54 1.89 1.59 1.7 1.63 1.65 1.3 1.11 1.15 0.68 0.89 1.08 1.45