Viewing Station: WA-TH-62 : Olympia 3.0 NW
Mar 22, 2021 - Sep 17, 20251,412 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.03"
September 1-17, 2025(17 of 17 days covered by obs)
NOAA Normal
1.08"
Departure from Normal
-1.05" : 3% of Normal
Year-To-Date: 21.92"
Jan 1 to Sep 17, 2025(247 of 260 days covered by obs)
NOAA Normal
28.11"
Departure from Normal
-6.19" : 78% of Normal
Water Year-To-Date: 46.87"
Oct 1, 2024 to Sep 17, 2025(336 of 352 days covered by obs)
NOAA Normal
48.70"
Departure from Normal
-1.83" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
7.60
7.99
-0.39
Feb
4.92
5.34
-0.42
Mar
5.62
5.94
-0.32
Apr
3.71
3.89
-0.18
May
2.21
2.33
-0.12
Jun
1.47
1.61
-0.14
Jul
0.58
0.60
-0.02
Aug
0.92
0.89
0.03
Sep
1.91
2.02
-0.11
Oct
4.80
5.14
-0.34
Nov
7.96
8.50
-0.54
Dec
7.83
8.14
-0.31
49.53
52.39
-2.86