Standardized Precipitation Index Table

North Central Climate Division

Oregon, Climate Division 06

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 1.38 5.53 8.67 10.67 12.15 13.25 13.65 13.69 13.89 14.85 16.8 18.56 23.94 28.18 38.41 49.89 51.99 69.26 85.29 102.22
Accumulated Precipitation Departure from Normal (in.) -0.53 1.08 1.57 1.03 1.1 1.4 1.38 1.09 0.24 -0.14 0.44 0.49 -1.23 -1.74 2.26 1.89 -2.2 -3 -5.06 -6.22
Accumulated Precipitation Percent of Average 72 124 122 111 110 112 111 109 102 99 103 103 95 94 106 104 96 96 94 94
Accumulated Precipitation Percentile (non-exceedance) 33 78.8 79.7 68.5 68.6 71.6 71.8 68.1 56.2 50.6 58.3 58.5 37 33.4 71.5 66 35.1 32.5 24.1 21.5
Standardized Precipitation Index -0.44 0.8 0.83 0.48 0.48 0.57 0.58 0.47 0.16 0.01 0.21 0.21 -0.33 -0.43 0.57 0.41 -0.38 -0.45 -0.7 -0.79