Standardized Precipitation Index Table

Extreme Southern Climate Division

Nevada, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.8 0.85 1.29 1.81 1.84 1.86 1.91 2 2.05 2.12 2.3 2.32 3.93 7.16 11.21 15.75 19.64 22.96 24.45 32.37
Accumulated Precipitation Departure from Normal (in.) 0.5 0.17 -0.16 -0.61 -1.49 -2.16 -2.59 -2.98 -3.36 -4.05 -4.46 -4.55 -4.39 -3.77 -2.59 -2.07 -1.04 -4.6 -10.04 -9.11
Accumulated Precipitation Percent of Average 268 126 89 75 55 46 42 40 38 34 34 34 47 66 81 88 95 83 71 78
Accumulated Precipitation Percentile (non-exceedance) 93.2 71.3 53 42.2 26.7 14.3 9.4 6.6 4.6 2.1 1.4 1.3 3.5 12.6 25.8 33.6 43.4 18.8 3 7
Standardized Precipitation Index 1.49 0.56 0.07 -0.2 -0.62 -1.07 -1.31 -1.51 -1.69 -2.03 -2.18 -2.24 -1.82 -1.15 -0.65 -0.42 -0.17 -0.88 -1.88 -1.48