Standardized Precipitation Index Table

Southwest Climate Division

Louisiana, 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.) 10.01 12.05 17.01 21.61 26.33 31.39 36.7 37.39 40.96 43.63 52.32 58.14 77.77 96.52 110.67 141.78 169.95 219.92 284.25 347.27
Accumulated Precipitation Departure from Normal (in.) 4.81 2.58 3.54 3.98 3.52 3.23 4.13 1 -0.2 -3.02 -0.66 -0.06 6.13 10.17 -5.74 -2.77 -4.78 -13.17 -7.22 -2.5
Accumulated Precipitation Percent of Average 193 127 126 123 115 111 113 103 100 94 99 100 109 112 95 98 97 94 98 99
Accumulated Precipitation Percentile (non-exceedance) 91.1 76 77.8 77.7 73.1 69.9 72.2 57.8 52 39.7 49.5 52.1 71.6 79.6 36 44.5 40.9 27.5 38.8 47
Standardized Precipitation Index 1.34 0.71 0.77 0.76 0.62 0.52 0.59 0.2 0.05 -0.26 -0.01 0.05 0.57 0.83 -0.36 -0.14 -0.23 -0.6 -0.28 -0.07