Viewing Station: MA-SF-38 : Boston 3.1 SW
Nov 27, 2023 - May 11, 2026733 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.39"
May 1-11, 2026(10 of 11 days covered by obs)
NOAA Normal
1.28"
Departure from Normal
-0.89" : 30% of Normal
Year-To-Date: 10.57"
Jan 1 to May 11, 2026(127 of 131 days covered by obs)
NOAA Normal
17.40"
Departure from Normal
-6.83" : 61% of Normal
Water Year-To-Date: 19.63"
Oct 1, 2025 to May 11, 2026(183 of 223 days covered by obs)
NOAA Normal
30.94"
Departure from Normal
-11.31" : 63% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.76
3.84
-0.08
Feb
3.51
3.45
0.06
Mar
4.67
4.68
-0.01
Apr
4.18
4.31
-0.13
May
3.61
3.63
-0.02
Jun
4.12
4.08
0.04
Jul
3.47
3.52
-0.05
Aug
3.60
3.64
-0.04
Sep
3.85
3.82
0.03
Oct
4.78
4.80
-0.02
Nov
3.99
3.98
0.01
Dec
4.77
4.86
-0.09
48.31
48.61
-0.30