Viewing Station: OR-MT-142 : Portland 5.2 E
Oct 12, 2021 - Sep 20, 20261,485 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.07"
September 1-22, 2026(19 of 22 days covered by obs)
NOAA Normal
1.22"
Departure from Normal
-0.15" : 87% of Normal
Year-To-Date: 20.66"
Jan 1 to Sep 22, 2026(258 of 265 days covered by obs)
NOAA Normal
25.52"
Departure from Normal
-4.86" : 81% of Normal
Water Year-To-Date: 40.66"
Oct 1, 2025 to Sep 22, 2026(346 of 357 days covered by obs)
NOAA Normal
42.52"
Departure from Normal
-1.86" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.93
6.38
-0.45
Feb
4.40
4.65
-0.25
Mar
4.63
5.08
-0.45
Apr
3.51
3.73
-0.22
May
2.76
2.77
-0.01
Jun
1.92
1.94
-0.02
Jul
0.52
0.52
0.00
Aug
0.63
0.60
0.03
Sep
1.67
1.62
0.05
Oct
3.95
4.05
-0.10
Nov
6.30
6.40
-0.10
Dec
6.75
7.16
-0.41
42.97
44.90
-1.93