Viewing Station: WA-LW-23 : Chehalis 7.0 WSW
Apr 19, 2015 - Sep 18, 20253,305 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.04"
September 1-18, 2025(18 of 18 days covered by obs)
NOAA Normal
1.14"
Departure from Normal
-1.10" : 4% of Normal
Year-To-Date: 18.76"
Jan 1 to Sep 18, 2025(258 of 261 days covered by obs)
NOAA Normal
28.56"
Departure from Normal
-9.80" : 66% of Normal
Water Year-To-Date: 40.30"
Oct 1, 2024 to Sep 18, 2025(350 of 353 days covered by obs)
NOAA Normal
48.88"
Departure from Normal
-8.58" : 82% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
7.20
7.85
-0.65
Feb
4.96
5.25
-0.29
Mar
5.87
5.99
-0.12
Apr
3.94
4.07
-0.13
May
2.56
2.44
0.12
Jun
1.56
1.70
-0.14
Jul
0.55
0.54
0.01
Aug
0.78
0.85
-0.07
Sep
1.90
1.97
-0.07
Oct
4.36
4.77
-0.41
Nov
7.91
8.15
-0.24
Dec
8.05
7.78
0.27
49.64
51.36
-1.72