Standardized Precipitation Index Table

West Central Climate Division

Wisconsin, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of Mar. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.24 2.66 3.36 4.84 4.94 10.07 13.91 15.88 20.39 22.26 24.29 28.41 35.15 40.85 62.67 70.75 94.15 124.97 169.42 210.6
Accumulated Precipitation Departure from Normal (in.) 0.42 -0.14 -0.44 -0.17 -1.8 0.87 0.97 -1.04 -0.41 -3.05 -4.9 -3.59 -0.66 -0.4 -1.42 -2.51 -1.95 -3.19 9.13 18.3
Accumulated Precipitation Percent of Average 123 95 88 97 73 109 107 94 98 88 83 89 98 99 98 97 98 98 106 110
Accumulated Precipitation Percentile (non-exceedance) 72.2 50.9 40.4 49.3 17.2 67.4 64.6 41.7 48.9 26 16.2 25.7 47 49.2 44 38.9 42.8 40.1 75.7 88.5
Standardized Precipitation Index 0.59 0.02 -0.24 -0.02 -0.95 0.45 0.37 -0.21 -0.03 -0.64 -0.98 -0.65 -0.07 -0.02 -0.15 -0.28 -0.18 -0.25 0.7 1.2