Viewing Station: OR-MT-137 : Portland 5.1 E
Jan 1, 2021 - Dec 13, 20251,767 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.42"
December 1-13, 2025(13 of 13 days covered by obs)
NOAA Normal
2.83"
Departure from Normal
1.59" : 156% of Normal
Year-To-Date: 35.47"
Jan 1 to Dec 13, 2025(337 of 347 days covered by obs)
NOAA Normal
39.05"
Departure from Normal
-3.58" : 91% of Normal
Water Year-To-Date: 14.36"
Oct 1, 2025 to Dec 13, 2025(74 of 74 days covered by obs)
NOAA Normal
13.08"
Departure from Normal
1.28" : 110% 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