Standardized Precipitation Index Table

South Central Climate Division

Ohio, Climate Division 09

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.) 5.76 12.34 15.22 20.26 22.36 25.5 29.46 29.89 36.04 38.35 41.48 43.69 57.07 66.27 84.08 103.63 124.91 174.81 217.02 269.54
Accumulated Precipitation Departure from Normal (in.) 1.61 4.49 3.4 5.5 4.26 4.14 5.19 3.01 6.15 4.79 3.52 1.77 3.35 2.94 0.17 -1.63 -0.95 6.98 7.29 17.85
Accumulated Precipitation Percent of Average 139 157 129 137 124 119 121 111 121 114 109 104 106 105 100 98 99 104 103 107
Accumulated Precipitation Percentile (non-exceedance) 82.4 95.6 86.6 92.6 86.9 85.1 88.5 76 89.4 82.9 75.2 63.8 71 67.4 52.2 44 47.2 73.7 72.2 89.6
Standardized Precipitation Index 0.93 1.7 1.11 1.44 1.12 1.04 1.2 0.71 1.25 0.95 0.68 0.35 0.55 0.45 0.05 -0.15 -0.07 0.63 0.59 1.26