Standardized Precipitation Index Table

Central Mountain Climate Division

Virginia, Climate Division 05

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.) 1.7 3.89 5.82 9.01 11.4 12.58 14.77 16.83 19.71 26.17 30.34 37.8 47.28 54.4 79.3 99.64 116.74 161.42 200.58 253.42
Accumulated Precipitation Departure from Normal (in.) -1.59 -2.87 -3.65 -3.51 -4.14 -5.8 -6.79 -8.28 -9.33 -7.15 -7.03 -3.55 -3.57 -5.45 -3.5 -1.66 -7.49 -4.31 -6.55 4.82
Accumulated Precipitation Percent of Average 52 58 61 72 73 68 69 67 68 79 81 91 93 91 96 98 94 97 97 102
Accumulated Precipitation Percentile (non-exceedance) 10.1 6 5.1 9.5 10 5.1 4.8 3.5 2.4 7.4 10.3 29.5 31 23.3 35.5 44.1 25 37.7 33.1 62.7
Standardized Precipitation Index -1.28 -1.56 -1.63 -1.31 -1.28 -1.63 -1.66 -1.81 -1.97 -1.44 -1.26 -0.54 -0.5 -0.73 -0.37 -0.15 -0.67 -0.31 -0.44 0.32