Standardized Precipitation Index Table

South Central Climate Division

Mississippi, Climate Division 08

Precipitation Data Table

Time Scale in Months (As of the end of Sep. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.72 8.65 17.02 22.76 27.48 34.38 37.84 45.75 54.44 59.61 61.36 73.79 87.35 105.69 139.11 172.4 197.89 261.16 332.42 383.27
Accumulated Precipitation Departure from Normal (in.) -1.05 0.03 2.71 3.86 3.85 5.45 2.93 5.44 8.64 8.06 5.74 15.05 14.32 18.06 21.69 26.12 21.75 26.27 38.7 30.91
Accumulated Precipitation Percent of Average 72 100 119 120 116 119 108 113 119 116 110 126 120 121 118 118 112 111 113 109
Accumulated Precipitation Percentile (non-exceedance) 39.7 54.8 79.2 83.4 80.1 82.1 68.2 76.8 85.5 83.2 74.6 94 91.7 93.5 94.4 95.7 91.1 92.2 96.6 91.4
Standardized Precipitation Index -0.26 0.12 0.81 0.97 0.84 0.92 0.47 0.73 1.06 0.96 0.66 1.56 1.39 1.52 1.59 1.71 1.35 1.42 1.83 1.37