Standardized Precipitation Index Table

Blue Grass Climate Division

Kentucky, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of Mar. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.3 6.01 11.89 14.54 16.17 19.12 20.59 24.23 30.51 34.45 37.34 40.43 54.45 61.35 87.36 113.04 142.6 194.98 251.92 320.34
Accumulated Precipitation Departure from Normal (in.) -1.2 -1.82 0.21 -0.89 -2.61 -2.49 -4.21 -4.34 -2.61 -2.97 -4.47 -5.39 -3.05 -6.19 -4.41 -0.43 4.91 11.49 22.73 45.46
Accumulated Precipitation Percent of Average 73 77 102 94 86 88 83 85 92 92 89 88 95 91 95 100 104 106 110 117
Accumulated Precipitation Percentile (non-exceedance) 30.6 28.1 56.3 43.9 28.6 31.4 21.2 22.6 35.1 33.6 26.6 23.7 37 24.8 35.4 49.9 65.3 77.3 89.7 98.6
Standardized Precipitation Index -0.51 -0.58 0.16 -0.15 -0.56 -0.48 -0.8 -0.75 -0.38 -0.42 -0.62 -0.72 -0.33 -0.68 -0.37 0 0.39 0.75 1.27 2.21