Standardized Precipitation Index Table

Central Mountain Climate Division

Virginia, Climate Division 05

Precipitation Data Table

Time Scale in Months (As of the end of Jan. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.02 5.4 6.58 8.77 10.83 13.71 20.17 24.34 31.8 34.09 35.54 41.28 48.4 63.38 81.19 99.91 120.27 163.87 204.47 260.32
Accumulated Precipitation Departure from Normal (in.) -0.02 -0.66 -2.32 -3.3 -4.8 -5.85 -3.66 -3.55 -0.07 -1.08 -3.11 -0.09 -1.97 2.32 -1.63 -2.58 -4.01 -1.89 -2.72 11.65
Accumulated Precipitation Percent of Average 99 89 74 73 69 70 85 87 100 97 92 100 96 104 98 97 97 99 99 105
Accumulated Precipitation Percentile (non-exceedance) 55.3 41.9 19 15.7 10.3 7.6 20.7 24.8 51.8 44.8 31.2 51.4 39.9 64 43.6 40.1 36.3 45 43.2 77.5
Standardized Precipitation Index 0.13 -0.2 -0.88 -1.01 -1.26 -1.43 -0.82 -0.68 0.05 -0.13 -0.49 0.04 -0.26 0.36 -0.16 -0.25 -0.35 -0.13 -0.17 0.76