Standardized Precipitation Index Table

Northern Coastal Plain Climate Division

North Carolina, Climate Division 08

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.) 1.76 4.37 6.33 9.67 11.61 15.93 22.1 28.52 34.41 37.28 40.28 44.8 50.54 62.94 90.38 114.57 135.55 178.47 228.69 293.82
Accumulated Precipitation Departure from Normal (in.) -1.9 -2.74 -3.76 -3.64 -6.14 -7.24 -6.95 -5.06 -3.1 -3.66 -4.57 -3.67 -8.05 -8.75 -6.59 -5.67 -9.95 -15.63 -14.04 2.51
Accumulated Precipitation Percent of Average 48 61 63 73 65 69 76 85 92 91 90 92 86 88 93 95 93 92 94 101
Accumulated Precipitation Percentile (non-exceedance) 7 7.7 7.4 13.6 6.5 4.5 6.4 16.4 29.7 26.8 21.9 28.9 11.6 11.3 22.9 27.8 17.1 9.1 13.6 58
Standardized Precipitation Index -1.47 -1.43 -1.44 -1.1 -1.51 -1.7 -1.52 -0.98 -0.53 -0.62 -0.78 -0.56 -1.2 -1.21 -0.74 -0.59 -0.95 -1.33 -1.1 0.2