Standardized Precipitation Index Table

Southwest Climate Division

Mississippi, Climate Division 07

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.) 10.74 15.42 20.17 25.02 30.09 35.04 42.64 43.28 47.69 49.45 54.59 58.34 78.72 96.41 110.19 143.98 176.28 232.95 300.81 370.78
Accumulated Precipitation Departure from Normal (in.) 5.81 5.17 4.22 3.89 3.43 2.55 5.84 3.31 4.49 1.82 1.86 1.3 5.76 6.88 -3.9 -2.66 5.01 4.5 15.19 28.08
Accumulated Precipitation Percent of Average 218 150 126 118 113 108 116 108 110 104 104 102 108 108 97 98 103 102 105 108
Accumulated Precipitation Percentile (non-exceedance) 95.7 87.8 81.6 76.9 73 66.5 78.2 68.2 72.2 60.7 60.4 57.7 71.8 73 39.8 43.8 63.5 60.7 76.8 88.7
Standardized Precipitation Index 1.72 1.17 0.9 0.73 0.61 0.43 0.78 0.47 0.59 0.27 0.26 0.19 0.58 0.61 -0.26 -0.15 0.34 0.27 0.73 1.21