Standardized Precipitation Index Table

Mountain (R) Climate Division

South Carolina, Climate Division 01

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.) 6.46 10.96 13.53 18.49 20.32 27.58 30.88 31.09 46.41 49.27 55.26 57.24 75.21 96.57 117.56 148.49 176.62 238.2 307.81 387.23
Accumulated Precipitation Departure from Normal (in.) 1.48 0.99 -2.59 -2.91 -6.58 -5.15 -6.27 -10.58 -0.31 -3.64 -3.88 -7.27 -5.44 -0.84 -11.64 -13.54 -17.28 -20.56 -15.68 -0.99
Accumulated Precipitation Percent of Average 130 110 84 86 76 84 83 75 99 93 93 89 93 99 91 92 91 92 95 100
Accumulated Precipitation Percentile (non-exceedance) 76.3 65.9 30.1 32 14.3 24.6 20.7 9.3 51.3 36.8 36.2 24.9 33.8 49.3 22.6 21.9 17.7 16.6 25.6 49.3
Standardized Precipitation Index 0.71 0.41 -0.52 -0.47 -1.06 -0.69 -0.82 -1.32 0.03 -0.34 -0.35 -0.68 -0.42 -0.02 -0.75 -0.78 -0.93 -0.97 -0.65 -0.02