Standardized Precipitation Index Table

South Central Climate Division

Arkansas, Climate Division 08

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.) 6.72 9.8 19.54 22.05 24.35 27.62 30.3 32.85 39.05 44.06 49.97 57.44 75.89 89.61 116.45 139.17 166.89 233.98 303.82 367.28
Accumulated Precipitation Departure from Normal (in.) 1.52 0.29 5.34 2.78 0.68 0.32 -0.37 -1.09 1.06 2.15 3.06 5.33 9.63 10.17 12.24 7.59 10.56 25.43 43.13 54.48
Accumulated Precipitation Percent of Average 129 103 138 114 103 101 99 97 103 105 107 110 115 113 112 106 107 112 117 117
Accumulated Precipitation Percentile (non-exceedance) 77.2 58 89.8 72.4 57.8 55.2 51.1 47 58.1 62.5 65.7 73.1 82.2 80.3 81.6 69.2 73.9 89.7 97 98.6
Standardized Precipitation Index 0.74 0.2 1.27 0.6 0.2 0.13 0.03 -0.08 0.2 0.32 0.4 0.62 0.92 0.85 0.9 0.5 0.64 1.27 1.89 2.2