Viewing Station: ME-CM-143 : Portland 5.4 NW
Oct 1, 2020 - May 29, 20261,957 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.45"
May 1-30, 2026(29 of 30 days covered by obs)
NOAA Normal
3.62"
Departure from Normal
1.83" : 151% of Normal
Year-To-Date: 16.41"
Jan 1 to May 30, 2026(149 of 150 days covered by obs)
NOAA Normal
18.87"
Departure from Normal
-2.46" : 87% of Normal
Water Year-To-Date: 27.45"
Oct 1, 2025 to May 30, 2026(240 of 242 days covered by obs)
NOAA Normal
32.82"
Departure from Normal
-5.37" : 84% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.39
3.47
-0.08
Feb
3.40
3.59
-0.19
Mar
4.08
4.22
-0.14
Apr
4.38
4.55
-0.17
May
3.74
3.67
0.07
Jun
4.39
4.36
0.03
Jul
3.53
3.56
-0.03
Aug
3.47
3.51
-0.04
Sep
3.92
3.78
0.14
Oct
5.08
5.38
-0.30
Nov
4.39
4.21
0.18
Dec
4.48
4.71
-0.23
48.25
49.01
-0.76