Standardized Precipitation Index Table

Central Mountains Climate Division

Pennsylvania, Climate Division 07

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 1.56 7.38 10.99 12.99 16.34 19.41 25.15 32.03 35.75 37.65 40.29 43.29 52.61 64.09 85.89 109.03 134.72 173.66 222.46 284.15
Accumulated Precipitation Departure from Normal (in.) -1.01 1.8 2.36 1.25 1.34 0.84 2.85 5.47 4.95 2.78 1.82 1.35 1.97 3.5 1.93 6.4 8.7 5.61 12.34 31.99
Accumulated Precipitation Percent of Average 61 132 127 111 109 105 113 121 116 108 105 103 104 106 102 106 107 103 106 113
Accumulated Precipitation Percentile (non-exceedance) 18.1 86.3 86.9 71.1 69.4 61.9 77.4 88.2 84.8 71.9 65 61.4 64.5 70.7 60.8 76.3 80.7 68.7 82 98.2
Standardized Precipitation Index -0.91 1.09 1.12 0.55 0.51 0.3 0.75 1.18 1.03 0.58 0.38 0.29 0.37 0.55 0.27 0.71 0.87 0.49 0.92 2.1