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 May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 7.28 10.79 12.54 17.16 18.34 23.48 26 26.61 40.43 45.28 51.43 52.79 68.73 85.79 109.01 133.04 161.59 210.75 271.56 339.59
Accumulated Precipitation Departure from Normal (in.) 2.8 2.25 -0.54 0.38 -2.2 -0.93 -1.77 -4.9 4.65 4.41 5.36 2.18 5.04 10.67 7.71 7.36 9.71 8.21 18.49 36.02
Accumulated Precipitation Percent of Average 162 126 96 102 89 96 94 84 113 111 112 104 108 114 108 106 106 104 107 112
Accumulated Precipitation Percentile (non-exceedance) 91.9 82.5 46.6 57 32.3 45 38.6 20.7 76.4 74.6 78.5 63.3 73.6 87.5 77.6 74.2 77.4 71 85.8 97
Standardized Precipitation Index 1.4 0.94 -0.08 0.17 -0.46 -0.13 -0.29 -0.82 0.72 0.66 0.79 0.34 0.63 1.15 0.76 0.65 0.75 0.55 1.07 1.88