Viewing Station: MA-SF-10 : Chelsea 0.8 N
Jun 21, 2015 - Sep 8, 20264,049 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.80"
September 1-8, 2026(8 of 8 days covered by obs)
NOAA Normal
0.99"
Departure from Normal
-0.19" : 80% of Normal
Year-To-Date: 25.37"
Jan 1 to Sep 8, 2026(251 of 251 days covered by obs)
NOAA Normal
31.37"
Departure from Normal
-6.00" : 81% of Normal
Water Year-To-Date: 36.35"
Oct 1, 2025 to Sep 8, 2026(343 of 343 days covered by obs)
NOAA Normal
44.49"
Departure from Normal
-8.14" : 82% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.65
3.81
-0.16
Feb
3.45
3.50
-0.05
Mar
4.52
4.69
-0.17
Apr
4.08
4.30
-0.22
May
3.56
3.46
0.10
Jun
4.10
3.98
0.12
Jul
3.54
3.53
0.01
Aug
3.48
3.50
-0.02
Sep
3.73
3.61
0.12
Oct
4.54
4.81
-0.27
Nov
3.92
3.94
-0.02
Dec
4.66
4.84
-0.18
47.23
47.97
-0.74