Standardized Precipitation Index Table

Northwest Climate Division

Wisconsin, Climate Division 01

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.) 1.98 2.47 2.79 4.85 5.19 8.67 14.06 16.29 19.02 21 21.99 26.34 32.42 38.55 58.08 66.85 85.83 115.9 155.37 190.48
Accumulated Precipitation Departure from Normal (in.) 0.36 -0.07 -0.75 0.12 -1.27 -0.35 1.38 -0.32 -1.57 -3.89 -6.44 -4.54 -2.01 -1.38 -3.74 -3.97 -6.91 -7.8 0.66 4.85
Accumulated Precipitation Percent of Average 122 97 79 103 80 96 111 98 92 84 77 85 94 97 94 94 93 94 100 103
Accumulated Precipitation Percentile (non-exceedance) 71.7 53.2 29.1 57.4 25.6 47.1 70.5 48.9 36.5 17.4 6.8 17.7 35.9 41.6 30.4 30.2 21.4 23.3 53.2 64.8
Standardized Precipitation Index 0.57 0.08 -0.55 0.19 -0.66 -0.07 0.54 -0.03 -0.35 -0.94 -1.49 -0.93 -0.36 -0.21 -0.51 -0.52 -0.79 -0.73 0.08 0.38