Viewing Station: ME-CM-18 : Portland 5.5 WNW
Aug 1, 2009 - Dec 18, 20256,055 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.11"
December 1-19, 2025(18 of 19 days covered by obs)
NOAA Normal
2.75"
Departure from Normal
-1.64" : 40% of Normal
Year-To-Date: 37.67"
Jan 1 to Dec 19, 2025(351 of 353 days covered by obs)
NOAA Normal
46.39"
Departure from Normal
-8.72" : 81% of Normal
Water Year-To-Date: 7.39"
Oct 1, 2025 to Dec 19, 2025(79 of 80 days covered by obs)
NOAA Normal
12.13"
Departure from Normal
-4.74" : 61% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.38
3.47
-0.09
Feb
3.43
3.59
-0.16
Mar
4.08
4.22
-0.14
Apr
4.37
4.55
-0.18
May
3.75
3.67
0.08
Jun
4.37
4.33
0.04
Jul
3.52
3.54
-0.02
Aug
3.47
3.51
-0.04
Sep
3.89
3.77
0.12
Oct
5.02
5.38
-0.36
Nov
4.36
4.21
0.15
Dec
4.49
4.71
-0.22
48.13
48.95
-0.82