Viewing Station: MA-MD-228 : Groton 4.2 WNW
Apr 6, 2023 - May 9, 2025721 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.21"
May 1-9, 2025(9 of 9 days covered by obs)
NOAA Normal
1.06"
Departure from Normal
3.15" : 396% of Normal
Year-To-Date: 15.79"
Jan 1 to May 9, 2025(119 of 129 days covered by obs)
NOAA Normal
16.06"
Departure from Normal
-0.27" : 98% of Normal
Water Year-To-Date: 23.54"
Oct 1, 2024 to May 9, 2025(209 of 221 days covered by obs)
NOAA Normal
29.07"
Departure from Normal
-5.53" : 81% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.39
3.39
0.00
Feb
3.28
3.25
0.03
Mar
4.13
4.16
-0.03
Apr
4.20
3.96
0.24
May
3.66
3.47
0.19
Jun
4.19
4.09
0.10
Jul
3.67
3.65
0.02
Aug
3.70
3.68
0.02
Sep
4.02
3.77
0.25
Oct
4.83
4.73
0.10
Nov
3.84
3.65
0.19
Dec
4.34
4.45
-0.11
47.25
46.25
1.00