Standardized Precipitation Index Table

Central Climate Division

Oklahoma, Climate Division 05

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.) 2.03 3.58 6.11 9.08 10.09 14.34 16.39 19.08 25.8 29.7 35.03 38.16 44.38 51.46 69.99 81.43 104.92 139.31 191.5 233.25
Accumulated Precipitation Departure from Normal (in.) -0.43 -0.38 0.82 2.14 1.06 2.12 0.68 0.51 4.24 3.88 4.04 3.67 4.61 4.74 1.02 0.18 1.39 1.22 18.82 26.12
Accumulated Precipitation Percent of Average 83 91 116 131 112 117 104 103 120 115 113 111 112 110 101 100 101 101 111 113
Accumulated Precipitation Percentile (non-exceedance) 47.8 48.8 68.3 79.9 66.6 72.3 59.5 57.6 79.9 75.8 75 72.1 74.1 72.5 56 52.5 55.9 54.6 85.8 90.9
Standardized Precipitation Index -0.06 -0.03 0.48 0.84 0.43 0.59 0.24 0.19 0.84 0.7 0.67 0.59 0.65 0.6 0.15 0.06 0.15 0.12 1.07 1.33