Standardized Precipitation Index Table

Western Piedmont Climate Division

Virginia, Climate Division 03

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.) 4.44 6.86 13.58 19.13 21.56 22.76 26.3 30.09 35.93 40.84 44 49.46 58.09 70.32 94.72 110.86 132.41 199.53 246.08 317.43
Accumulated Precipitation Departure from Normal (in.) 0.65 -0.03 3.28 5.44 4.83 2.59 2.31 1.84 3.27 4.15 3.32 5.28 3.64 5.96 6.38 2.36 -0.08 22.77 25.32 52.66
Accumulated Precipitation Percent of Average 117 100 132 140 129 113 110 107 110 111 108 112 107 109 107 102 100 113 111 120
Accumulated Precipitation Percentile (non-exceedance) 70.1 53.9 87.9 93.6 88.1 73.3 68.9 65.2 73.3 76.3 70.9 78.5 70 77.4 75.7 60.1 50.9 94.6 94.6 99.8
Standardized Precipitation Index 0.53 0.1 1.17 1.52 1.18 0.62 0.49 0.39 0.62 0.71 0.55 0.79 0.52 0.75 0.69 0.26 0.02 1.61 1.6 2.94