Standardized Precipitation Index Table

East Central Climate Division

Mississippi, Climate Division 06

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 8.68 14.14 19.75 23.82 27.97 32.65 36.93 37.03 42.17 42.81 46.99 50.28 66.89 81.85 101.05 131.82 154.31 220.68 275.77 353.58
Accumulated Precipitation Departure from Normal (in.) 4.35 4.57 4.33 3.21 2.14 1.51 1.78 -1.07 0.85 -2.21 -2.88 -3.55 -2.33 -3.14 -6.67 -7.14 -7.41 4.85 5.91 29.67
Accumulated Precipitation Percent of Average 200 148 128 116 108 105 105 97 102 95 94 93 97 96 94 95 95 102 102 109
Accumulated Precipitation Percentile (non-exceedance) 96.2 89.5 83.5 74.1 66.3 61.3 61.7 47.3 56.7 42.2 39.7 37.1 43.5 41.8 32.8 33.7 34.4 60.8 61.3 88.4
Standardized Precipitation Index 1.77 1.26 0.97 0.65 0.42 0.29 0.3 -0.07 0.17 -0.2 -0.26 -0.33 -0.16 -0.21 -0.45 -0.42 -0.4 0.27 0.29 1.2