Viewing Station: MA-MD-62 : Chelmsford 1.2 E
Jun 21, 2016 - May 11, 20263,318 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.00"
May 1-11, 2026(11 of 11 days covered by obs)
NOAA Normal
1.32"
Departure from Normal
-0.32" : 76% of Normal
Year-To-Date: 10.93"
Jan 1 to May 11, 2026(129 of 131 days covered by obs)
NOAA Normal
15.98"
Departure from Normal
-5.05" : 68% of Normal
Water Year-To-Date: 20.26"
Oct 1, 2025 to May 11, 2026(220 of 223 days covered by obs)
NOAA Normal
28.69"
Departure from Normal
-8.43" : 71% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.36
3.58
-0.22
Feb
3.20
3.28
-0.08
Mar
4.13
4.29
-0.16
Apr
3.97
3.94
0.03
May
3.72
3.69
0.03
Jun
4.17
4.13
0.04
Jul
3.69
3.73
-0.04
Aug
3.63
3.75
-0.12
Sep
3.76
3.78
-0.02
Oct
4.70
4.79
-0.09
Nov
3.75
3.80
-0.05
Dec
4.26
4.45
-0.19
46.34
47.21
-0.87