Viewing Station: OR-MT-33 : Portland 0.8 ENE
Feb 1, 2011 - Sep 21, 20265,828 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.88"
September 1-22, 2026(21 of 22 days covered by obs)
NOAA Normal
1.12"
Departure from Normal
-0.24" : 78% of Normal
Year-To-Date: 20.10"
Jan 1 to Sep 22, 2026(264 of 265 days covered by obs)
NOAA Normal
23.76"
Departure from Normal
-3.66" : 85% of Normal
Water Year-To-Date: 39.24"
Oct 1, 2025 to Sep 22, 2026(356 of 357 days covered by obs)
NOAA Normal
40.22"
Departure from Normal
-0.98" : 98% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.74
6.28
-0.54
Feb
4.19
4.54
-0.35
Mar
4.32
4.86
-0.54
Apr
3.29
3.63
-0.34
May
2.48
2.65
-0.17
Jun
1.62
1.71
-0.09
Jul
0.44
0.44
0.00
Aug
0.56
0.55
0.01
Sep
1.53
1.58
-0.05
Oct
3.70
3.85
-0.15
Nov
6.08
6.49
-0.41
Dec
6.68
7.26
-0.58
40.63
43.84
-3.21