Standardized Precipitation Index Table

Southern Climate Division

West Virginia, Climate Division 05

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.43 6.92 10.33 12.16 13.58 16.22 19.87 24.82 27.31 31.82 35.93 38.09 48.44 58.17 85.19 104.47 127.47 184.12 228.87 290.51
Accumulated Precipitation Departure from Normal (in.) -0.74 0.34 0.47 -0.49 -1.94 -2.42 -2.71 -2.47 -4.12 -3.74 -3.27 -5.07 -4.63 -3.7 -1.22 -0.66 -2.18 11.16 12.72 31.15
Accumulated Precipitation Percent of Average 77 105 105 96 88 87 88 91 87 89 92 88 91 94 99 99 98 106 106 112
Accumulated Precipitation Percentile (non-exceedance) 33.7 60.9 60.9 45.5 29.3 27.7 26.8 29.2 19.3 24.5 29 18.9 24.3 31.3 45.4 48.4 42.9 81.5 81.8 97.5
Standardized Precipitation Index -0.42 0.28 0.28 -0.11 -0.55 -0.59 -0.62 -0.55 -0.87 -0.69 -0.55 -0.88 -0.7 -0.49 -0.12 -0.04 -0.18 0.89 0.91 1.95