Viewing Station: WA-TH-31 : Olympia 4.5 NW
Sep 17, 2011 - May 2, 20263,873 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.00"
May 1-3, 2026(2 of 3 days covered by obs)
NOAA Normal
0.20"
Departure from Normal
-0.20" : 0% of Normal
Year-To-Date: 19.18"
Jan 1 to May 3, 2026(121 of 123 days covered by obs)
NOAA Normal
21.16"
Departure from Normal
-1.98" : 91% of Normal
Water Year-To-Date: 45.07"
Oct 1, 2025 to May 3, 2026(213 of 215 days covered by obs)
NOAA Normal
40.93"
Departure from Normal
4.14" : 110% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
7.31
8.01
-0.70
Feb
4.72
5.28
-0.56
Mar
5.38
5.89
-0.51
Apr
3.55
3.85
-0.30
May
2.11
2.30
-0.19
Jun
1.41
1.59
-0.18
Jul
0.56
0.59
-0.03
Aug
0.89
0.84
0.05
Sep
1.82
1.96
-0.14
Oct
4.61
5.10
-0.49
Nov
7.62
8.52
-0.90
Dec
7.54
8.08
-0.54
47.52
52.01
-4.49