Viewing Station: MA-MD-257 : Chelmsford 1.8 NW
Nov 11, 2025 - Jul 10, 2026186 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.39"
July 1-10, 2026(9 of 10 days covered by obs)
NOAA Normal
1.19"
Departure from Normal
1.20" : 201% of Normal
Year-To-Date: 14.56"
Jan 1 to Jul 10, 2026(155 of 191 days covered by obs)
NOAA Normal
23.69"
Departure from Normal
-9.13" : 61% of Normal
Water Year-To-Date: 17.13"
Oct 1, 2025 to Jul 10, 2026(200 of 283 days covered by obs)
NOAA Normal
36.36"
Departure from Normal
-19.23" : 47% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.31
3.57
-0.26
Feb
3.18
3.26
-0.08
Mar
4.12
4.25
-0.13
Apr
3.99
3.92
0.07
May
3.73
3.71
0.02
Jun
4.17
4.13
0.04
Jul
3.69
3.73
-0.04
Aug
3.65
3.77
-0.12
Sep
3.74
3.80
-0.06
Oct
4.68
4.81
-0.13
Nov
3.74
3.79
-0.05
Dec
4.25
4.41
-0.16
46.25
47.15
-0.90