S
M
T
W
T
F
S
30
71°
55°
31
76°
54°
1
66°
57°
2
70°
55°
3
68°
53°
4
70°
53°
5
70°
52°
6
74°
53°
7
70°
57°
8
74°
55°
9
78°
54°
10
71°
56°
11
67°
52°
12
66°
53°
13
60°
54°
14
67°
54°
15
66°
51°
16
73°
53°
17
76°
52°
18
69°
54°
19
68°
53°
20
72°
54°
21
67°
52°
22
68°
52°
23
67°
53°
24
68°
53°
25
68°
52°
26
69°
53°
27
68°
54°
28
67°
49°
29
62°
49°
30
62°
47°
1
61°
47°
2
61°
46°
3
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Burien
Burien's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 45° and 54°. The average high for September is 67° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Burien. See also: October | November | December.