Standardized Precipitation Index Table

Upper Susquehanna Climate Division

Pennsylvania, Climate Division 06

Precipitation Data Table

Time Scale in Months (As of the end of Apr. 2026)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 5.21 9.99 11.15 13.15 15.83 17.44 22.13 24.46 26.84 30.6 34.65 42.01 50.04 56.98 79.67 101.7 128.82 168.18 218.49 256.44
Accumulated Precipitation Departure from Normal (in.) 1.83 3.63 2.47 1.96 1.83 0.48 1.83 0.48 -0.99 -1.25 -1.19 2.33 1.7 0.31 0.29 5.28 9.69 9.37 20.02 18.39
Accumulated Precipitation Percent of Average 154 157 128 117 113 103 109 102 96 96 97 106 104 101 100 105 108 106 110 108
Accumulated Precipitation Percentile (non-exceedance) 90.6 96.5 87.8 80.7 76.1 58.5 71 57 43.3 41.9 42.5 68.2 63 53.4 52.8 72 80.2 75.2 88.6 83.9
Standardized Precipitation Index 1.32 1.81 1.17 0.87 0.71 0.21 0.55 0.18 -0.17 -0.21 -0.19 0.47 0.33 0.09 0.07 0.58 0.85 0.68 1.21 0.99