Standardized Precipitation Index Table

East Central Climate Division

Arkansas, Climate Division 06

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.39 10.53 12.75 15.25 18.44 19.56 22.08 25.73 29.62 32.36 39.2 47.58 64.55 72.64 99.75 120.84 151.84 206.95 270.82 332.16
Accumulated Precipitation Departure from Normal (in.) -0.78 1.75 -0.96 -2.85 -3.12 -5.23 -6.03 -6 -5.85 -8.03 -6.36 -3.27 -0.06 -3.08 -2.02 -5.82 -0.85 3.34 16.33 26.83
Accumulated Precipitation Percent of Average 81 120 93 84 86 79 79 81 84 80 86 94 100 96 98 95 99 102 106 109
Accumulated Precipitation Percentile (non-exceedance) 40.7 73.2 44.7 30.9 30.8 18.9 16.3 17.8 19.5 12.5 20.9 36.3 51.7 40.1 44.8 34.3 48.9 59.2 82.3 92.1
Standardized Precipitation Index -0.23 0.62 -0.13 -0.5 -0.5 -0.88 -0.98 -0.92 -0.86 -1.15 -0.81 -0.35 0.04 -0.25 -0.13 -0.4 -0.03 0.23 0.93 1.41