Viewing Station: OR-MT-158 : Portland 3.9 SE
Sep 20, 2023 - May 28, 2025548 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.81"
May 1-29, 2025(28 of 29 days covered by obs)
NOAA Normal
2.38"
Departure from Normal
-0.57" : 76% of Normal
Year-To-Date: 17.25"
Jan 1 to May 29, 2025(148 of 149 days covered by obs)
NOAA Normal
20.29"
Departure from Normal
-3.04" : 85% of Normal
Water Year-To-Date: 35.92"
Oct 1, 2024 to May 29, 2025(239 of 241 days covered by obs)
NOAA Normal
37.07"
Departure from Normal
-1.15" : 97% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.83
6.27
-0.44
Feb
4.26
4.49
-0.23
Mar
4.41
4.87
-0.46
Apr
3.41
3.72
-0.31
May
2.54
2.64
-0.10
Jun
1.67
1.74
-0.07
Jul
0.44
0.46
-0.02
Aug
0.56
0.58
-0.02
Sep
1.53
1.55
-0.02
Oct
3.81
3.93
-0.12
Nov
6.22
6.42
-0.20
Dec
6.75
7.19
-0.44
41.43
43.86
-2.43