Standardized Precipitation Index Table

Southwest Climate Division

North Dakota, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Jul. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.3 4.15 5.65 6.11 6.31 6.69 7.06 7.36 8.01 9.91 14.9 17.17 26.83 29.11 33.99 45.45 50.29 61.47 76.12 93.9
Accumulated Precipitation Departure from Normal (in.) 0.13 -1.35 -2.25 -3.12 -3.6 -3.63 -3.7 -3.81 -3.66 -2.73 0.88 1.5 3.24 3.09 2.68 3.8 3.34 -1.14 -2.17 -0.13
Accumulated Precipitation Percent of Average 106 75 71 66 64 65 66 66 69 78 106 110 114 112 109 109 107 98 97 100
Accumulated Precipitation Percentile (non-exceedance) 61.3 24.8 18 11 7.1 6.8 6.4 6 7.6 17.4 63.5 69.8 78.3 77.3 72.8 76.1 72.8 44.5 39.4 50.4
Standardized Precipitation Index 0.29 -0.68 -0.92 -1.23 -1.47 -1.49 -1.52 -1.55 -1.44 -0.94 0.35 0.52 0.78 0.75 0.61 0.71 0.61 -0.14 -0.27 0.01