Standardized Precipitation Index Table

South Central Climate Division

Wisconsin, Climate Division 08

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.) 3.97 4.57 6.63 8.23 9.26 12.58 15.78 18.78 23.6 24.87 26.4 29.19 36.77 43.34 68.22 78.41 95.22 129.83 175.31 227.29
Accumulated Precipitation Departure from Normal (in.) 1.91 1.29 2.04 2.07 0.97 1.76 1.29 0.52 1.59 -1.32 -3.4 -3.64 -0.63 -0.38 2.45 1.79 -3.43 -1.78 10.71 29.79
Accumulated Precipitation Percent of Average 193 139 144 134 112 116 109 103 107 95 89 89 98 99 104 102 97 99 107 115
Accumulated Precipitation Percentile (non-exceedance) 93.7 83.8 89.7 87.4 69 76 66.2 57.8 65.6 41.8 27.5 27.1 47.7 49.5 63.4 59.5 38.1 45.5 77.9 96.5
Standardized Precipitation Index 1.53 0.99 1.27 1.14 0.49 0.71 0.42 0.2 0.4 -0.21 -0.6 -0.61 -0.06 -0.01 0.34 0.24 -0.3 -0.11 0.77 1.82