Standardized Precipitation Index Table

Central Climate Division

Kentucky, Climate Division 02

Precipitation Data Table

Time Scale in Months (As of the end of Sep. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.6 9.26 14.37 20.62 25.08 29.82 37.3 44.22 49.17 55.77 60.62 67.75 75.88 94.84 128.87 160.01 188.63 239.95 297.28 353.02
Accumulated Precipitation Departure from Normal (in.) 0.17 2.13 2.73 4.63 4.51 4.93 7.47 10.51 11.06 13.15 14.17 18.25 14.77 20.49 30.01 36.32 40.47 42.59 50.75 57.34
Accumulated Precipitation Percent of Average 105 130 123 129 122 120 125 131 129 131 130 137 124 128 130 129 127 122 121 119
Accumulated Precipitation Percentile (non-exceedance) 61 80.6 81.5 89.1 85.6 84.9 92.2 96 95.9 96.8 97.1 98.7 95 97.7 99.4 99.5 99.8 99.6 99.8 99.9
Standardized Precipitation Index 0.28 0.86 0.9 1.23 1.06 1.03 1.42 1.75 1.74 1.85 1.89 2.23 1.64 2 2.5 2.59 2.82 2.65 2.9 2.98