Standardized Precipitation Index Table

Southwest Climate Division

Wisconsin, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Nov. 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.94 2.18 3.87 8.99 14.98 21.11 24.01 27.19 30.3 30.87 30.92 32.28 40.9 56.73 74.24 88.61 103.05 136.03 163.09 201.65
Accumulated Precipitation Departure from Normal (in.) -1.11 -2.34 -4.45 -3.3 -1.34 0.28 -0.74 -0.64 0.45 -0.12 -1.19 -1.32 -1.05 2.31 7.05 0.63 2.29 1.66 -4.93 -0.04
Accumulated Precipitation Percent of Average 46 48 46 73 92 101 97 98 102 100 96 96 97 104 110 101 102 101 97 100
Accumulated Precipitation Percentile (non-exceedance) 20.5 6.4 4.6 19.9 40.4 55.4 46.9 47.8 55.7 51.5 43.6 42.7 45.6 63.8 80.6 54 59.9 56.4 37.4 50.9
Standardized Precipitation Index -0.83 -1.52 -1.68 -0.84 -0.24 0.13 -0.08 -0.06 0.14 0.04 -0.16 -0.18 -0.11 0.35 0.86 0.1 0.25 0.16 -0.32 0.02