Standardized Precipitation Index Table

Southwest Climate Division

Arkansas, Climate Division 07

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.) 5.9 8.32 16.46 20.29 23.24 30.63 35.16 37.35 42.58 48.55 53.78 59.41 78.58 92.56 117.68 138.61 168.17 237.69 308.6 369.09
Accumulated Precipitation Departure from Normal (in.) 1.02 -0.47 3.61 2.88 1.56 5.15 6.1 4.98 6.22 8.02 7.74 8.2 14.55 15.87 15.28 10.67 14.52 32.67 52.3 61.56
Accumulated Precipitation Percent of Average 121 95 128 117 107 120 121 115 117 120 117 116 123 121 115 108 109 116 120 120
Accumulated Precipitation Percentile (non-exceedance) 72 49 82.6 74.4 63.7 79.1 81.3 76.5 79.9 83.6 81.1 81.3 90.6 89.6 85.8 75.1 79.3 93.3 98.1 98.8
Standardized Precipitation Index 0.58 -0.03 0.94 0.66 0.35 0.81 0.89 0.72 0.84 0.98 0.88 0.89 1.32 1.26 1.07 0.68 0.82 1.5 2.07 2.26