Standardized Precipitation Index Table

Southern Interior Climate Division

Maine, Climate Division 02

Precipitation Data Table

Time Scale in Months (As of the end of Jul. 2020)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 3.93 6.25 8.72 13.73 16.43 19.19 22.2 26.65 30.96 36.98 40.06 45.66 59.18 69.67 97.37 117.21 142.02 185.97 231.48 275.38
Accumulated Precipitation Departure from Normal (in.) 0.33 -1.1 -2.15 -0.81 -1.77 -2.1 -2.62 -2.12 -2.1 -0.17 -0.78 1.43 4.06 4.13 8.9 7.45 9.39 9.2 10.57 10.38
Accumulated Precipitation Percent of Average 109 85 80 94 90 90 89 93 94 100 98 103 107 106 110 107 107 105 105 104
Accumulated Precipitation Percentile (non-exceedance) 64.5 31.1 21.3 42.4 31.9 29.8 27.3 33.4 35.1 50.7 46.3 61.2 73.7 72.2 83.7 76.6 78.6 74.5 74.5 72.2
Standardized Precipitation Index 0.37 -0.49 -0.8 -0.19 -0.47 -0.53 -0.6 -0.43 -0.38 0.02 -0.09 0.29 0.63 0.59 0.98 0.73 0.79 0.66 0.66 0.59