Standardized Precipitation Index Table

Western Climate Division

Utah, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of Jun. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.7 1.12 1.57 2.68 3.14 3.6 4.46 5.85 5.96 6.97 7.24 7.76 12.95 17.09 21.44 26.42 29.82 41.04 51.4 64.07
Accumulated Precipitation Departure from Normal (in.) 0.07 -0.61 -1.16 -1.01 -1.36 -1.69 -1.56 -0.89 -1.67 -1.36 -1.89 -2.06 0.39 1.97 1.77 1.48 0.33 1.74 2.29 5.14
Accumulated Precipitation Percent of Average 110 65 57 73 70 68 74 87 78 84 79 79 103 113 109 106 101 104 105 109
Accumulated Precipitation Percentile (non-exceedance) 66.2 27.9 14.1 22.7 15.7 12.1 15.8 31.5 17.7 25 17.3 15.4 59 78.7 73.1 67.7 55.1 65.8 67.7 80.9
Standardized Precipitation Index 0.42 -0.59 -1.08 -0.75 -1.01 -1.17 -1 -0.48 -0.93 -0.68 -0.94 -1.02 0.23 0.79 0.62 0.46 0.13 0.41 0.46 0.87