Standardized Precipitation Index Table

Southern Mountains Climate Division

North Carolina, Climate Division 01

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.) 6.09 8.76 17.77 24.79 26.26 27.53 29.32 35.57 40.35 45.52 48.96 54.56 69.55 81.58 108.47 135.23 163.77 237.01 306.27 387.82
Accumulated Precipitation Departure from Normal (in.) 0.55 -1.51 2.63 4.7 2.26 -0.54 -2.83 -1.81 -2.52 -2.25 -3.38 -2.29 -2.42 -3.42 -5.32 -6.68 -6.95 9.26 21.78 46.64
Accumulated Precipitation Percent of Average 110 85 117 123 109 98 91 95 94 95 94 96 97 96 95 95 96 104 108 114
Accumulated Precipitation Percentile (non-exceedance) 64.6 34.1 77 85.1 69.7 48.9 35.1 41.8 37.9 40 35.3 41.1 41.7 38.7 34.3 32.7 33.4 70.7 86.9 98.6
Standardized Precipitation Index 0.37 -0.41 0.74 1.04 0.52 -0.03 -0.38 -0.21 -0.31 -0.25 -0.38 -0.22 -0.21 -0.29 -0.4 -0.45 -0.43 0.54 1.12 2.2