Standardized Precipitation Index Table

Southwest Climate Division

Mississippi, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Jan. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 10 15 17.21 27.2 27.84 32.72 40.35 45.73 53.34 61.73 64.27 68.34 89.48 102.21 131.53 154.8 190.74 255.51 316.07 377.77
Accumulated Precipitation Departure from Normal (in.) 4.5 3.68 1.6 8.37 5.77 6.27 8.82 9.92 12.66 15.78 12.63 11.5 16.98 18.91 17.87 14.7 20.28 28.21 32.04 36.88
Accumulated Precipitation Percent of Average 182 133 110 144 126 124 128 128 131 134 124 120 123 123 116 110 112 112 111 111
Accumulated Precipitation Percentile (non-exceedance) 93.3 84.6 66.6 93.8 85 85.7 91.7 92.5 95.4 96.7 92.6 89.6 94 94.5 91.8 84.9 90.7 94.2 94 94.9
Standardized Precipitation Index 1.5 1.02 0.43 1.53 1.04 1.07 1.39 1.44 1.69 1.83 1.45 1.26 1.56 1.6 1.4 1.03 1.32 1.57 1.56 1.64