Standardized Precipitation Index Table

South Central Climate Division

Ohio, Climate Division 09

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.) 2.73 4.31 9.09 11.87 13.53 16.51 17.89 21.62 26.87 29.68 32.56 36.51 47.28 53.94 78.83 100.68 126.98 174.05 223.63 283.52
Accumulated Precipitation Departure from Normal (in.) -1.25 -2.58 -1.16 -1.61 -2.85 -2.5 -4.1 -4.06 -3.22 -4.38 -5.62 -5.35 -4.84 -7.02 -5 -2.27 1.18 6.34 14.07 32.12
Accumulated Precipitation Percent of Average 69 63 89 88 83 87 81 84 89 87 85 87 91 88 94 98 101 104 107 113
Accumulated Precipitation Percentile (non-exceedance) 26.1 12.7 36.5 32.1 20.5 26.5 16.9 18.8 26.6 20.3 15.8 18.6 24.2 16 28.7 41.3 55.6 71.4 85.9 98.5
Standardized Precipitation Index -0.64 -1.14 -0.35 -0.47 -0.83 -0.63 -0.96 -0.88 -0.62 -0.83 -1 -0.89 -0.7 -0.99 -0.56 -0.22 0.14 0.56 1.07 2.18