Standardized Precipitation Index Table

Southeast Climate Division

Ohio, Climate Division 10

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 11.32 13.69 17.38 18.9 21.83 25.03 25.71 28.98 30.54 33.65 35.7 48.35 58.06 78.42 96.82 120.17 166.74 204.09 255.37
Accumulated Precipitation Departure from Normal (in.) 2.01 3.75 2.48 3.51 1.93 1.78 2.11 0.14 0.4 -1.75 -3.06 -5.19 -3.73 -2.95 -3.48 -5.13 -2.67 2.99 -0.52 9.81
Accumulated Precipitation Percent of Average 150 150 122 125 111 109 109 101 101 95 92 87 93 95 96 95 98 102 100 104
Accumulated Precipitation Percentile (non-exceedance) 88.5 94.2 82 86 73 71.1 72.6 53.5 55.6 37.5 29 18 29.2 34.3 34.7 28.8 40.5 61 49.3 75.1
Standardized Precipitation Index 1.2 1.58 0.92 1.08 0.61 0.55 0.6 0.09 0.14 -0.32 -0.55 -0.92 -0.55 -0.4 -0.39 -0.56 -0.24 0.28 -0.02 0.68