Standardized Precipitation Index Table

Central Climate Division

Louisiana, Climate Division 05

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.) 9.53 14.36 18.91 24.03 30.62 36.13 47.94 48.27 54.29 57.12 64.71 68.85 91.71 109.63 122.51 156.09 185.26 239 314.32 376.2
Accumulated Precipitation Departure from Normal (in.) 4.29 4.06 3.48 3.64 4.7 4.29 11.41 8.13 10.43 9.1 11.63 11.36 18.82 20.33 7.62 9.38 12.86 9.07 26.86 31.35
Accumulated Precipitation Percent of Average 182 139 123 118 118 113 131 120 124 119 122 120 126 123 107 106 107 104 109 109
Accumulated Precipitation Percentile (non-exceedance) 90.1 82.7 77 75.6 78.5 74.4 91.9 84.8 89.1 85.7 90.6 89.4 95.5 95.3 73.5 75.7 80.6 70.6 91.3 92.7
Standardized Precipitation Index 1.29 0.94 0.74 0.69 0.79 0.65 1.4 1.03 1.23 1.07 1.32 1.25 1.7 1.68 0.63 0.69 0.86 0.54 1.36 1.45