Standardized Precipitation Index Table

South Central Climate Division

Arkansas, Climate Division 08

Precipitation Data Table

Time Scale in Months (As of the end of Jun. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 6.32 12.36 19.22 26.46 33.95 41.15 43.9 46.67 55.72 56.35 57.67 63.71 88.95 105.12 141.26 176 195.94 251.57 312.44 374.07
Accumulated Precipitation Departure from Normal (in.) 2.41 3.49 5.18 7.26 10.44 13 10.67 8.98 14.39 11.65 9.75 11.77 23 25.13 37.39 44.19 40.27 44.07 53.11 62.91
Accumulated Precipitation Percent of Average 162 139 137 138 144 146 132 124 135 126 120 123 135 131 136 134 126 121 120 120
Accumulated Precipitation Percentile (non-exceedance) 86.6 85.2 86.9 90.5 94.5 96.7 91.8 86.3 93.9 89.8 85.6 88.8 97.5 97.4 99.2 99.5 98.7 98.7 99.4 99.7
Standardized Precipitation Index 1.11 1.05 1.12 1.31 1.6 1.84 1.39 1.09 1.55 1.27 1.06 1.21 1.96 1.94 2.43 2.57 2.22 2.23 2.49 2.76