Viewing Station: ME-CM-165 : Portland 4.3 W
Nov 11, 2023 - May 30, 2026829 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 6.57"
May 1-30, 2026(30 of 30 days covered by obs)
NOAA Normal
3.63"
Departure from Normal
2.94" : 181% of Normal
Year-To-Date: 16.87"
Jan 1 to May 30, 2026(150 of 150 days covered by obs)
NOAA Normal
19.02"
Departure from Normal
-2.15" : 89% of Normal
Water Year-To-Date: 26.91"
Oct 1, 2025 to May 30, 2026(240 of 242 days covered by obs)
NOAA Normal
32.91"
Departure from Normal
-6.00" : 82% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.40
3.53
-0.13
Feb
3.48
3.63
-0.15
Mar
4.12
4.25
-0.13
Apr
4.39
4.56
-0.17
May
3.75
3.67
0.08
Jun
4.37
4.29
0.08
Jul
3.49
3.50
-0.01
Aug
3.45
3.50
-0.05
Sep
3.88
3.73
0.15
Oct
5.00
5.34
-0.34
Nov
4.36
4.26
0.10
Dec
4.53
4.75
-0.22
48.22
49.01
-0.79