Standardized Precipitation Index Table

Northeast Climate Division

Arkansas, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of Jan. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 1.16 1.93 3.43 7.72 11.23 12.71 14.79 20.19 28.17 39.89 41.91 47.5 63.22 72.89 96.13 119.46 148.71 202.8 252.9 307.79
Accumulated Precipitation Departure from Normal (in.) -3.05 -6.64 -9.37 -8.45 -8.45 -10.51 -12.08 -10.43 -7.41 -0.61 -3.49 -1.65 1.13 0.37 -2.25 -2.31 1.06 5.89 6.83 12.5
Accumulated Precipitation Percent of Average 28 23 27 48 57 55 55 66 79 98 92 97 102 101 98 98 101 103 103 104
Accumulated Precipitation Percentile (non-exceedance) 5.9 0.2 0.1 2.1 4 2.3 1.5 4.1 13.5 49.2 34.6 44.3 56.7 53.3 43.9 44.3 54.2 65.1 65.5 74.3
Standardized Precipitation Index -1.56 -2.85 -3.01 -2.04 -1.75 -2 -2.18 -1.74 -1.1 -0.02 -0.4 -0.14 0.17 0.08 -0.15 -0.14 0.11 0.39 0.4 0.65