Viewing Station: OR-WS-177 : Forest Grove 0.6 W
Jun 27, 2024 - Sep 20, 2026809 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.90"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
0.89"
Departure from Normal
0.01" : 101% of Normal
Year-To-Date: 21.12"
Jan 1 to Sep 20, 2026(262 of 263 days covered by obs)
NOAA Normal
25.37"
Departure from Normal
-4.25" : 83% of Normal
Water Year-To-Date: 39.60"
Oct 1, 2025 to Sep 20, 2026(354 of 355 days covered by obs)
NOAA Normal
44.01"
Departure from Normal
-4.41" : 90% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
7.05
6.96
0.09
Feb
5.07
5.05
0.02
Mar
4.87
4.76
0.11
Apr
3.25
3.23
0.02
May
2.11
2.07
0.04
Jun
1.31
1.29
0.02
Jul
0.33
0.30
0.03
Aug
0.49
0.46
0.03
Sep
1.34
1.27
0.07
Oct
3.55
3.53
0.02
Nov
6.73
6.59
0.14
Dec
8.36
8.27
0.09
44.46
43.78
0.68