Standardized Precipitation Index Table

Southern Climate Division

West Virginia, Climate Division 05

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.) 6.46 9.72 11.4 18.62 21.83 24.85 27.45 28.07 35.34 38.04 42.44 44.46 56.03 66.8 83.78 104.91 131.15 174.14 222.02 273.42
Accumulated Precipitation Departure from Normal (in.) 2.31 1.93 -0.33 3.69 3.49 3.23 3.04 0.81 4.93 3.7 3.39 1.28 1.13 1.96 -2.63 -3.17 1.47 1.16 5.78 13.88
Accumulated Precipitation Percent of Average 156 125 97 125 119 115 112 103 116 111 109 103 102 103 97 97 101 101 103 105
Accumulated Precipitation Percentile (non-exceedance) 91.1 83.2 47.8 88.4 85.7 81.2 78.6 59.2 84 76.9 74.9 60.6 58.4 61.9 38.9 38 56.6 54.7 67 82.1
Standardized Precipitation Index 1.35 0.96 -0.05 1.19 1.07 0.89 0.79 0.23 0.99 0.74 0.67 0.27 0.21 0.3 -0.28 -0.3 0.17 0.12 0.44 0.92