Standardized Precipitation Index Table

North Central Climate Division

Louisiana, Climate Division 02

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.) 8.17 13.82 18.81 24.91 29.75 36.55 42.23 42.63 47.61 49.58 55.72 59.91 86.66 103.6 118.93 151.05 178.77 224.89 287.03 352.41
Accumulated Precipitation Departure from Normal (in.) 3.13 3.64 3.34 4.7 4.36 5.65 6.86 3.82 5.53 4.12 5.82 5.92 17.22 18.73 10.98 12.22 16.79 8.88 16.94 28.24
Accumulated Precipitation Percent of Average 162 136 122 123 117 118 119 110 113 109 112 111 125 122 110 109 110 104 106 109
Accumulated Precipitation Percentile (non-exceedance) 87.3 82.1 77.3 80.5 76.6 78.3 80.2 68.9 74.2 69.1 74.2 73.5 92.4 91.1 78.1 77.3 83.3 68.3 78.1 87.6
Standardized Precipitation Index 1.14 0.92 0.75 0.86 0.72 0.78 0.85 0.49 0.65 0.5 0.65 0.63 1.43 1.35 0.77 0.75 0.97 0.48 0.78 1.16