Viewing Station: ME-CM-143 : Portland 5.4 NW
Oct 1, 2020 - Sep 15, 20262,064 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.79"
September 1-15, 2026(15 of 15 days covered by obs)
NOAA Normal
1.96"
Departure from Normal
-1.17" : 40% of Normal
Year-To-Date: 26.96"
Jan 1 to Sep 15, 2026(258 of 258 days covered by obs)
NOAA Normal
32.34"
Departure from Normal
-5.38" : 83% of Normal
Water Year-To-Date: 38.00"
Oct 1, 2025 to Sep 15, 2026(350 of 350 days covered by obs)
NOAA Normal
46.29"
Departure from Normal
-8.29" : 82% 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