Viewing Station: MA-MD-247 : Billerica 1.1 NNE
Dec 25, 2024 - Sep 8, 2026602 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.75"
September 1-8, 2026(8 of 8 days covered by obs)
NOAA Normal
1.02"
Departure from Normal
-0.27" : 74% of Normal
Year-To-Date: 21.63"
Jan 1 to Sep 8, 2026(242 of 251 days covered by obs)
NOAA Normal
31.02"
Departure from Normal
-9.39" : 70% of Normal
Water Year-To-Date: 30.55"
Oct 1, 2025 to Sep 8, 2026(330 of 343 days covered by obs)
NOAA Normal
43.79"
Departure from Normal
-13.24" : 70% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.37
3.59
-0.22
Feb
3.29
3.38
-0.09
Mar
4.22
4.45
-0.23
Apr
4.04
4.07
-0.03
May
3.67
3.62
0.05
Jun
4.14
4.13
0.01
Jul
3.65
3.68
-0.03
Aug
3.62
3.66
-0.04
Sep
3.82
3.72
0.10
Oct
4.67
4.73
-0.06
Nov
3.78
3.82
-0.04
Dec
4.32
4.62
-0.30
46.59
47.47
-0.88