Standardized Precipitation Index Table

Northern Mountains (S) Climate Division

North Carolina, Climate Division 02

Precipitation Data Table

Time Scale in Months (As of the end of Jul. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 4.15 8.25 17.42 25.52 28.57 36.31 41.33 46.69 49.73 56.82 57.51 61.37 79.5 93.36 137.39 170.53 193.23 243.87 304.77 350.32
Accumulated Precipitation Departure from Normal (in.) -1.02 -1.5 3.24 7.27 5.74 9.8 11.06 12.56 12.24 15.58 12.08 10.91 14.88 16.47 36.5 43.26 42.15 42.58 53.39 48.91
Accumulated Precipitation Percent of Average 80 85 123 140 125 137 137 137 133 138 127 122 123 121 136 134 128 121 121 116
Accumulated Precipitation Percentile (non-exceedance) 33.1 30.5 83.7 96.2 90.5 96.9 97.5 97.9 97.5 98.7 94.6 91.9 95.5 96.2 99.9 100 99.9 99.8 99.9 99.8
Standardized Precipitation Index -0.44 -0.51 0.98 1.77 1.31 1.86 1.96 2.03 1.95 2.23 1.6 1.4 1.69 1.77 3.16 3.41 3.11 2.82 3.23 2.9