Standardized Precipitation Index Table

Northwest Climate Division

Minnesota, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.37 4.43 4.89 5.12 5.38 6.21 7.93 8.78 9.37 12.92 15.66 20.27 27.72 30.08 41.17 48.07 59.58 84.24 105.23 131.2
Accumulated Precipitation Departure from Normal (in.) -0.32 0.15 -0.26 -0.58 -0.96 -0.87 -0.05 -0.85 -2.63 -2.06 -2.6 -1.73 0.58 1.07 -2.77 -2.89 -6.33 -3.68 -4.66 -0.7
Accumulated Precipitation Percent of Average 88 104 95 90 85 88 99 91 78 86 86 92 102 104 94 94 90 96 96 99
Accumulated Precipitation Percentile (non-exceedance) 47.8 58.7 48.8 41.4 33.3 35.3 52.3 38.3 16.8 23.7 19.9 32 57.9 63 29.5 29.3 15.5 32.4 31 48.4
Standardized Precipitation Index -0.06 0.22 -0.03 -0.22 -0.43 -0.38 0.06 -0.3 -0.96 -0.71 -0.84 -0.47 0.2 0.33 -0.54 -0.54 -1.02 -0.45 -0.49 -0.04