Standardized Precipitation Index Table

Northwest Climate Division

Minnesota, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of Aug. 2021)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.1 3.9 5.74 6.85 8.44 8.68 8.83 9.13 9.69 9.96 10.91 11.86 26.72 29.37 41.9 57.4 66.86 88.07 107.49 133.18
Accumulated Precipitation Departure from Normal (in.) 0.11 -2.39 -4.29 -5.85 -5.82 -6.46 -6.86 -7.21 -7.34 -7.97 -8.66 -10.11 -5.31 -7.79 -2.09 -1.76 0.93 0.21 -2.29 1.43
Accumulated Precipitation Percent of Average 104 62 57 54 59 57 56 56 57 56 56 54 83 79 95 97 101 100 98 101
Accumulated Precipitation Percentile (non-exceedance) 59 10.3 2.8 1.1 1.7 0.9 0.6 0.4 0.3 0.2 0.2 0.1 10.1 4 35.4 39.6 57 52.2 41.1 56.5
Standardized Precipitation Index 0.23 -1.27 -1.91 -2.29 -2.13 -2.35 -2.54 -2.67 -2.73 -2.96 -2.9 -3.1 -1.27 -1.75 -0.37 -0.26 0.18 0.06 -0.22 0.16