Standardized Precipitation Index Table

Northeastern Climate Division

Vermont, 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.) 6.09 9.9 13.6 16.65 17.91 22.36 24.89 27.08 29.6 35.37 43.45 49.66 62.27 72.35 104.52 123.54 147.08 189.77 225.16 272.4
Accumulated Precipitation Departure from Normal (in.) 2.43 3.01 3.69 4.12 2.48 3.59 2.52 0.92 -0.43 1.21 4.86 6.85 9.58 10.78 18.94 19.2 18.8 18.83 11.54 16.02
Accumulated Precipitation Percent of Average 166 144 137 133 116 119 111 104 99 104 113 116 118 118 122 118 115 111 105 106
Accumulated Precipitation Percentile (non-exceedance) 92 91 93.2 93.6 81 85.9 75.6 60.4 48.3 61.6 83.4 89.4 93.9 94.1 98 97.1 94.4 90.6 76 79.9
Standardized Precipitation Index 1.4 1.34 1.49 1.52 0.88 1.08 0.69 0.26 -0.04 0.29 0.97 1.25 1.55 1.56 2.06 1.89 1.59 1.31 0.71 0.84