Standardized Precipitation Index Table

Southwest Climate Division

Wisconsin, 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.) 2.83 6.03 9.14 9.71 9.76 11.12 15.76 17.82 19.74 22.87 28.79 35.57 49.25 53.08 67.45 81.89 102.78 133.31 167.31 213.52
Accumulated Precipitation Departure from Normal (in.) -1.09 -0.97 0.12 -0.45 -1.53 -1.58 1.01 0.58 -1.32 -2.14 -0.24 2.05 6.71 6.8 0.38 2.07 2.12 -0.95 -0.59 11.95
Accumulated Precipitation Percent of Average 72 86 101 96 86 88 107 103 94 91 99 106 116 115 101 103 102 99 100 106
Accumulated Precipitation Percentile (non-exceedance) 29.5 37.7 55.7 46.9 31 31.6 64.8 59.2 40.6 35.1 50.6 66.1 85.4 84.9 53.5 60.4 59.2 48.2 49.5 77.7
Standardized Precipitation Index -0.54 -0.31 0.14 -0.08 -0.49 -0.48 0.38 0.23 -0.24 -0.38 0.01 0.41 1.05 1.03 0.09 0.26 0.23 -0.04 -0.01 0.76