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Climatological Information for Seattle, United States
Location of weather station : 47.4 N, 122.3 W, altitude : 123 m
Data
Period
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Mean Maximum
Temperature
(deg. C)
1961-1990
7.2
9.7
11.5
14.0
17.7
21.1
24.0
24.0
20.7
15.4
10.3
7.3
Mean Temperature
(deg. C)
1961-1990
4.5
6.4
7.6
9.6
12.8
16.1
18.4
18.6
15.9
11.6
7.4
4.7
Mean Minimum
Temperature
(deg. C)
1961-1990
1.8
3.0
3.6
5.1
7.9
11.1
12.9
13.2
11.1
7.7
4.5
2.1
Rainfall Amount
(mm)
1961-1990
136.7
101.3
89.9
59.2
43.2
38.1
19.3
29.0
47.8
82.0
148.1
150.1
Days with Rain*
1961-1990
15.5
13.1
13.7
10.6
7.8
6.0
3.4
4.5
6.8
10.0
15.3
15.8
Mean Daily Sunshine
Duration
(hours)
1961-1990
2.3
3.9
5.8
6.9
8.2
8.9
10.1
9.1
7.4
4.6
2.4
1.7
* denotes number of days with at least 1.0 mm of rainfall
2003
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Last revision date: <20 Dec 2012>
