Standardized Precipitation Index Table

South Central Climate Division

Ohio, Climate Division 09

Precipitation Data Table

Time Scale in Months (As of the end of Apr. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.45 7.12 8.13 9.74 11.59 15.11 18.23 23.11 23.6 29.13 33.97 40.11 54.57 63.77 83.7 102.24 121.27 164.46 212.22 257.4
Accumulated Precipitation Departure from Normal (in.) -1.25 -0.55 -2.46 -4.18 -5.56 -4.96 -4.45 -2.59 -5.75 -4.63 -3.76 -1.77 2.08 1.7 -0.15 -1.75 -4.52 -3.29 2.52 5.73
Accumulated Precipitation Percent of Average 66 93 77 70 68 75 80 90 80 86 90 96 104 103 100 98 96 98 101 102
Accumulated Precipitation Percentile (non-exceedance) 21.3 44.8 21.3 8.8 4.3 8.7 13.3 29.7 11 18.4 25.1 39.7 63.9 61.2 50.6 43.3 33.4 39.5 58.5 66.3
Standardized Precipitation Index -0.8 -0.13 -0.8 -1.35 -1.72 -1.36 -1.11 -0.53 -1.23 -0.9 -0.67 -0.26 0.35 0.28 0.02 -0.17 -0.43 -0.27 0.21 0.42