Standardized Precipitation Index Table

South Central Climate Division

Oregon, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Mar. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 1.65 3.38 6.59 8.39 9.64 10.51 11.37 12.33 12.36 13.31 15.33 16.52 21.15 26.25 32.25 39.52 42.48 53.75 68.55 82.9
Accumulated Precipitation Departure from Normal (in.) 0.13 0.28 1.51 1.27 0.65 0.38 0.56 1.07 0.7 0.54 1.1 1.02 0.59 0.63 1.26 -1.55 -3.95 -8.18 -8.94 -10.15
Accumulated Precipitation Percent of Average 109 109 130 118 107 104 105 110 106 104 108 107 103 102 104 96 91 87 88 89
Accumulated Precipitation Percentile (non-exceedance) 63.3 63.6 83 75.2 63.5 59.1 61.4 68.4 63.1 60.4 66.5 65.4 58.8 58.1 62.7 40.4 25.8 11.8 13.1 12.6
Standardized Precipitation Index 0.34 0.35 0.96 0.68 0.35 0.23 0.29 0.48 0.34 0.26 0.43 0.39 0.22 0.2 0.32 -0.24 -0.65 -1.18 -1.12 -1.15