Standardized Precipitation Index Table

Northwest Climate Division

North Dakota, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of Jan. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.2 0.76 1.57 3.46 4.79 6.46 10.56 11.53 15.65 16.9 17.15 17.35 19.1 21.38 31.42 37.01 44.83 62.45 76.05 85.68
Accumulated Precipitation Departure from Normal (in.) -0.27 -0.22 0.03 0.97 0.8 0.66 2.44 0.11 2.02 2.11 1.72 1.49 1.72 -0.26 -0.28 -0.45 -2.69 -0.93 -3.18 -9.44
Accumulated Precipitation Percent of Average 43 78 102 139 120 111 130 101 115 114 111 109 110 99 99 99 94 99 96 90
Accumulated Precipitation Percentile (non-exceedance) 16.5 36.2 57.8 83.2 72.7 67.5 87.1 54.7 75.2 75.2 71.8 69.5 71.8 49.3 49.5 48 32.3 45.9 34.6 12.6
Standardized Precipitation Index -0.98 -0.35 0.2 0.96 0.6 0.45 1.13 0.12 0.68 0.68 0.58 0.51 0.58 -0.02 -0.01 -0.05 -0.46 -0.1 -0.4 -1.15