Standardized Precipitation Index Table

Northeast Climate Division

Wisconsin, Climate Division 03

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.37 1.57 2.58 3.13 7.51 9.74 12.13 16.67 18.72 20.67 25.48 27.72 33.35 39.93 62.39 70.7 92.1 128.67 170.79 207.86
Accumulated Precipitation Departure from Normal (in.) -0.71 -0.67 -1.05 -2.51 -0.72 -2.06 -3.21 -2.3 -4.14 -5.55 -3.34 -2.85 -0.94 -2.53 1.15 -2.4 0.25 6.16 17.64 24.14
Accumulated Precipitation Percent of Average 34 70 71 56 91 83 79 88 82 79 88 91 97 94 102 97 100 105 112 113
Accumulated Precipitation Percentile (non-exceedance) 10 24.2 19.2 5.2 39.9 25.7 18.3 28.8 14.2 8.1 22.4 26.7 43.3 32.8 58.4 37.8 52.4 74.1 94.4 97.7
Standardized Precipitation Index -1.28 -0.7 -0.87 -1.63 -0.25 -0.65 -0.9 -0.56 -1.07 -1.4 -0.76 -0.62 -0.17 -0.45 0.21 -0.31 0.06 0.65 1.59 1.99