Viewing Station: MA-PL-17 : Plympton 0.9 NNE
May 19, 2015 - May 31, 20263,296 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.75"
May 1-31, 2026(30 of 31 days covered by obs)
NOAA Normal
3.58"
Departure from Normal
-0.83" : 77% of Normal
Year-To-Date: 6.01"
Jan 1 to May 31, 2026(76 of 151 days covered by obs)
NOAA Normal
21.28"
Departure from Normal
-15.27" : 28% of Normal
Water Year-To-Date: 19.74"
Oct 1, 2025 to May 31, 2026(141 of 243 days covered by obs)
NOAA Normal
35.53"
Departure from Normal
-15.79" : 56% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
4.23
4.35
-0.12
Feb
3.68
3.82
-0.14
Mar
5.27
5.42
-0.15
Apr
4.52
4.60
-0.08
May
3.58
3.63
-0.05
Jun
3.87
3.86
0.01
Jul
3.26
3.36
-0.10
Aug
3.63
3.74
-0.11
Sep
4.16
4.01
0.15
Oct
4.89
4.93
-0.04
Nov
4.47
4.49
-0.02
Dec
4.89
5.09
-0.20
50.45
51.30
-0.85