Viewing Station: WA-KG-239 : Seattle 3.9 N
Dec 24, 2017 - Aug 20, 20262,694 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.02"
August 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
0.64"
Departure from Normal
-0.62" : 3% of Normal
Year-To-Date: 15.67"
Jan 1 to Aug 20, 2026(227 of 232 days covered by obs)
NOAA Normal
21.13"
Departure from Normal
-5.46" : 74% of Normal
Water Year-To-Date: 30.24"
Oct 1, 2025 to Aug 20, 2026(312 of 324 days covered by obs)
NOAA Normal
36.30"
Departure from Normal
-6.06" : 83% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
5.17
5.58
-0.41
Feb
3.70
3.71
-0.01
Mar
4.22
4.13
0.09
Apr
2.99
2.94
0.05
May
2.04
2.01
0.03
Jun
1.59
1.60
-0.01
Jul
0.78
0.75
0.03
Aug
0.99
0.94
0.05
Sep
1.64
1.56
0.08
Oct
3.78
3.67
0.11
Nov
5.76
5.92
-0.16
Dec
5.63
5.79
-0.16
38.29
38.60
-0.31