Standardized Precipitation Index Table

Northwest Climate Division

Minnesota, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of Sep. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.84 4.06 10.03 15.13 16.44 17.79 18.05 18.17 18.82 20.51 21.22 24.91 38.41 44.94 52.84 67.28 72.05 92.68 120.24 140.32
Accumulated Precipitation Departure from Normal (in.) -1.55 -1.31 1.34 2.68 1.31 1.09 0.47 0.03 0.03 1.02 0.83 2.87 7.69 6.21 8.81 6.59 6.1 4.76 10.36 8.53
Accumulated Precipitation Percent of Average 35 76 115 121 109 107 103 100 100 105 104 113 125 116 120 111 109 105 109 106
Accumulated Precipitation Percentile (non-exceedance) 8.1 25.6 73.3 83.3 68.1 65.2 58 52.8 52.7 64.1 61.8 79 96 89.6 95.3 86.2 83.5 73.7 87 79.7
Standardized Precipitation Index -1.4 -0.66 0.62 0.97 0.47 0.39 0.2 0.07 0.07 0.36 0.3 0.81 1.75 1.26 1.68 1.09 0.97 0.63 1.13 0.83