Standardized Precipitation Index Table

Southeast Climate Division

Mississippi, Climate Division 09

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.) 9.59 12.52 20.79 24.4 26.79 28.29 29.99 30.98 36.65 43.05 48.1 54.38 72.38 86.2 119.35 143.82 191.38 258.44 329.29 396.25
Accumulated Precipitation Departure from Normal (in.) 3.37 0.88 3.73 1.75 0.19 -1.32 -3.47 -7.29 -7.57 -5.85 -5.32 -4.33 -3.36 -2.14 1.88 -3.35 15.12 23.36 35.47 43.67
Accumulated Precipitation Percent of Average 154 108 122 108 101 96 90 81 83 88 90 93 96 98 102 98 109 110 112 112
Accumulated Precipitation Percentile (non-exceedance) 86.7 63 80.4 66 54.2 44.1 31.9 14.5 14.5 22.5 26.6 33.3 38.9 44.1 57.1 42.3 82.4 89 95 97
Standardized Precipitation Index 1.11 0.33 0.86 0.41 0.11 -0.15 -0.47 -1.06 -1.06 -0.76 -0.63 -0.43 -0.28 -0.15 0.18 -0.19 0.93 1.23 1.64 1.88