Standardized Precipitation Index Table

Wind River Climate Division

Wyoming, Climate Division 09

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.) 1.7 3.24 3.82 4.42 5.41 7.79 9.09 11.03 11.99 17.36 18.83 20.68 24.43 28.02 37.61 43.89 51.73 62.31 79.33 93.3
Accumulated Precipitation Departure from Normal (in.) 0.41 1.09 0.75 0.51 0.54 1.68 1.81 2.89 2.85 6.62 5.79 5.79 6.48 7.03 7.87 8.08 7.18 2.9 5.08 4.19
Accumulated Precipitation Percent of Average 132 151 125 113 111 128 125 135 131 162 144 139 136 134 126 123 116 105 107 105
Accumulated Precipitation Percentile (non-exceedance) 77.6 90.7 79.2 71.1 69 87.5 84.9 92.8 90.7 99.1 97.2 96.3 96.9 97.1 96.5 95.5 91.5 69.6 78.1 72.1
Standardized Precipitation Index 0.76 1.32 0.81 0.55 0.49 1.15 1.03 1.46 1.32 2.38 1.91 1.78 1.87 1.89 1.81 1.69 1.38 0.51 0.77 0.59