Standardized Precipitation Index Table

Southeast Climate Division

Wisconsin, Climate Division 09

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.) 4.32 5 7.71 9.68 11.23 14.55 18.35 22.05 26.33 28.04 29.36 32.16 40.36 46.04 70.8 81.46 96.61 130.59 175.62 221.83
Accumulated Precipitation Departure from Normal (in.) 2.14 1.47 2.65 2.89 2.25 2.98 3.26 3.48 4.28 2.2 0.06 -0.22 2.94 2.04 5.96 5.05 -0.61 0.9 13.43 27.2
Accumulated Precipitation Percent of Average 198 142 152 143 125 126 122 119 119 109 100 99 108 105 109 107 99 101 108 114
Accumulated Precipitation Percentile (non-exceedance) 94.7 85.5 92.9 92.2 83.1 85.7 81.2 80.4 83.3 69.6 52.8 50.6 71.4 64.6 78.9 73.6 48.8 54.3 84.6 96.2
Standardized Precipitation Index 1.62 1.06 1.47 1.42 0.96 1.07 0.88 0.86 0.97 0.51 0.07 0.02 0.56 0.37 0.8 0.63 -0.03 0.11 1.02 1.78