Standardized Precipitation Index Table

Central Climate Division

Kentucky, Climate Division 02

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.) 7.01 17 22.36 30.89 35.16 40.55 45.73 45.85 52.58 54.74 61.02 63.48 80.23 92.99 113.27 139.57 160.86 218.75 274.45 339.08
Accumulated Precipitation Departure from Normal (in.) 2.39 8.03 8.45 13.04 12.87 13.79 15.17 12.26 15.55 14 15.71 13.84 16.74 16.64 14.04 13.68 12.07 20.36 26.57 41.65
Accumulated Precipitation Percent of Average 152 189 161 173 158 152 150 137 142 134 135 128 126 122 114 111 108 110 111 114
Accumulated Precipitation Percentile (non-exceedance) 88.6 99.1 98.3 99.5 99.1 98.8 99 96.8 98.3 96.7 97.5 95.5 96.7 95.2 88.5 86.2 80.9 89.4 92.3 97.6
Standardized Precipitation Index 1.21 2.38 2.13 2.58 2.36 2.26 2.34 1.85 2.12 1.84 1.97 1.69 1.84 1.67 1.2 1.09 0.87 1.25 1.43 1.97