Viewing Station: WA-LW-23 : Chehalis 7.0 WSW
Apr 19, 2015 - Apr 30, 20263,457 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.85"
April 1-30, 2026(30 of 30 days covered by obs)
NOAA Normal
3.94"
Departure from Normal
-1.09" : 72% of Normal
Year-To-Date: 18.63"
Jan 1 to Apr 30, 2026(118 of 120 days covered by obs)
NOAA Normal
21.97"
Departure from Normal
-3.34" : 85% of Normal
Water Year-To-Date: 42.82"
Oct 1, 2025 to Apr 30, 2026(209 of 212 days covered by obs)
NOAA Normal
42.29"
Departure from Normal
0.53" : 101% 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