Standardized Precipitation Index Table

Central Climate Division

West Virginia, Climate Division 04

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.) 3.36 7.21 12.33 15.69 18.26 20.57 24.05 29.09 34.87 38.38 42.53 45.97 56.22 66.81 98.2 117.38 143.22 199.71 253.19 321.08
Accumulated Precipitation Departure from Normal (in.) -0.98 -0.62 0.53 0.08 -0.62 -1.63 -1.71 -1.13 -0.56 -1.9 -2.39 -2.98 -4.52 -4.44 0.19 -2.94 -3.82 3.59 8.09 26.98
Accumulated Precipitation Percent of Average 78 92 104 101 97 93 93 96 98 95 95 94 93 94 100 98 97 102 103 109
Accumulated Precipitation Percentile (non-exceedance) 27.2 41 61.3 53.6 44.5 34.9 36.1 42.4 47.3 37.4 35.5 32.4 26.1 28 52.1 38.5 36.7 62.5 73.7 97
Standardized Precipitation Index -0.61 -0.23 0.29 0.09 -0.14 -0.39 -0.36 -0.19 -0.07 -0.32 -0.37 -0.46 -0.64 -0.58 0.05 -0.29 -0.34 0.32 0.63 1.88