Standardized Precipitation Index Table

Extreme Southern Climate Division

Nevada, Climate Division 04

Precipitation Data Table

Time Scale in Months (As of the end of Apr. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 0.12 0.12 0.54 1.15 1.95 3.63 4.03 4.96 5.22 5.39 5.66 6.5 7.48 7.58 8.01 12.97 16.98 25.31 28.69 30.12
Accumulated Precipitation Departure from Normal (in.) -0.28 -1.04 -1.59 -1.88 -1.77 -0.59 -0.66 -0.17 -0.66 -1.08 -0.92 -0.36 -1.53 -3.53 -5.75 -5.02 -3.68 -2.24 -5.77 -11.28
Accumulated Precipitation Percent of Average 30 10 25 38 52 86 86 97 89 83 86 95 83 68 58 72 82 92 83 73
Accumulated Precipitation Percentile (non-exceedance) 28.3 4.2 9.9 16.3 20.6 46 44.6 53.5 44.9 38.2 40.7 49.6 33.9 14.6 4.4 10.8 21.1 35 16 3.2
Standardized Precipitation Index -0.57 -1.73 -1.29 -0.98 -0.82 -0.1 -0.14 0.09 -0.13 -0.3 -0.23 -0.01 -0.42 -1.05 -1.71 -1.24 -0.8 -0.39 -0.99 -1.86