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
68°
54°
16
72°
53°
17
75°
53°
18
69°
51°
19
71°
51°
20
69°
51°
21
70°
52°
22
71°
52°
23
69°
53°
24
70°
52°
25
68°
52°
26
69°
53°
27
68°
54°
28
68°
52°
29
67°
49°
30
62°
47°
1
61°
47°
2
63°
53°
3
63°
46°
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 61° to 75°, with overnight lows between 46° and 54°. The average high for September is 68° 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.