Standardized Precipitation Index Table

East Central Climate Division

North Dakota, Climate Division 06

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.) 2.85 5.41 5.75 6.08 6.4 6.95 8.92 9.37 9.79 13.63 15.88 20.41 28.6 31.09 42.35 50.72 59.44 86.42 103.75 130.5
Accumulated Precipitation Departure from Normal (in.) 0.16 1.09 0.62 0.46 0.28 0.23 1.48 0.49 -1.16 0.11 -0.63 0.31 3.37 4.31 2.19 3.89 -0.78 6.12 3.41 10.06
Accumulated Precipitation Percent of Average 106 125 112 108 105 103 120 106 89 101 96 102 113 116 105 108 99 108 103 108
Accumulated Precipitation Percentile (non-exceedance) 61.5 75.6 66.9 63.6 59.8 58.4 78.2 61.3 37.5 54.3 44.8 55.8 81.4 86.9 68.6 78.2 46.2 79.7 66.1 84.4
Standardized Precipitation Index 0.29 0.69 0.44 0.35 0.25 0.21 0.78 0.29 -0.32 0.11 -0.13 0.15 0.89 1.12 0.48 0.78 -0.1 0.83 0.42 1.01