Standardized Precipitation Index Table

North Central Climate Division

Wisconsin, Climate Division 02

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.) 2.41 2.85 3.61 4.68 5.23 9.9 13.48 15.66 19.12 21.33 22.94 28.02 34.12 41.3 61.62 71.88 94.63 126.15 167.62 205.24
Accumulated Precipitation Departure from Normal (in.) 0.72 0.13 -0.23 -0.5 -1.91 0.06 -0.2 -1.93 -2.42 -4.54 -6.51 -4 -1.75 -0.61 -2.5 -2.08 -1.56 -2.13 7.18 12.71
Accumulated Precipitation Percent of Average 143 105 94 90 73 101 99 89 89 82 78 88 95 99 96 97 98 98 104 107
Accumulated Precipitation Percentile (non-exceedance) 81.6 59.9 46.5 39.2 15 54.1 50.3 31.2 29.4 14.2 6.8 20.6 37.6 47.2 37.3 39.9 43.9 42.6 74.1 84.8
Standardized Precipitation Index 0.9 0.25 -0.09 -0.27 -1.04 0.1 0.01 -0.49 -0.54 -1.07 -1.49 -0.82 -0.32 -0.07 -0.32 -0.25 -0.15 -0.19 0.65 1.03