Viewing Station: WA-TH-40 : Olympia 8.5 WSW
May 10, 2015 - May 30, 20253,551 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.51"
May 1-31, 2025(30 of 31 days covered by obs)
NOAA Normal
2.74"
Departure from Normal
-1.23" : 55% of Normal
Year-To-Date: 28.88"
Jan 1 to May 31, 2025(150 of 151 days covered by obs)
NOAA Normal
29.82"
Departure from Normal
-0.94" : 97% of Normal
Water Year-To-Date: 64.24"
Oct 1, 2024 to May 31, 2025(242 of 243 days covered by obs)
NOAA Normal
55.42"
Departure from Normal
8.82" : 116% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
9.36
10.94
-1.58
Feb
6.12
7.55
-1.43
Mar
6.97
8.09
-1.12
Apr
4.63
5.14
-0.51
May
2.74
3.04
-0.30
Jun
1.87
2.02
-0.15
Jul
0.70
0.81
-0.11
Aug
1.11
1.28
-0.17
Sep
2.35
2.72
-0.37
Oct
6.02
7.00
-0.98
Nov
9.91
12.03
-2.12
Dec
9.67
10.87
-1.20
61.45
71.49
-10.04