Standardized Precipitation Index Table

Southern Interior Climate Division

Maine, Climate Division 02

Precipitation Data Table

Time Scale in Months (As of the end of Mar. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 9.2 10.34 14.64 22.76 25.4 30.8 35.93 42.66 48.18 54.48 59.39 62.09 71.99 88.97 112.31 133.54 157.77 198.81 249.69 296.08
Accumulated Precipitation Departure from Normal (in.) 5.52 3.59 4.35 8.48 6.84 8.12 9.53 12.84 14.72 17.27 18.67 17.7 17.35 21.95 23.66 22.26 24.87 21.73 28.41 30.66
Accumulated Precipitation Percent of Average 250 153 142 159 137 136 136 143 144 146 146 140 132 133 127 120 119 112 113 112
Accumulated Precipitation Percentile (non-exceedance) 99.3 94.8 94.3 99.2 96.6 96.9 97.9 99.4 99.7 99.8 99.9 99.7 99.2 99.4 99.1 97.3 97.5 93 95.4 95.1
Standardized Precipitation Index 2.47 1.63 1.58 2.42 1.82 1.87 2.03 2.5 2.72 2.92 2.98 2.71 2.42 2.53 2.35 1.93 1.96 1.48 1.69 1.66