S
M
T
W
T
F
S
30
65°
56°
31
65°
57°
1
69°
61°
2
70°
61°
3
71°
60°
4
68°
57°
5
71°
56°
6
69°
57°
7
81°
57°
8
85°
61°
9
94°
65°
10
76°
59°
11
66°
58°
12
68°
59°
13
66°
58°
14
71°
57°
15
66°
57°
16
63°
57°
17
70°
59°
18
63°
58°
19
68°
58°
20
65°
60°
21
65°
59°
22
66°
57°
23
68°
58°
24
71°
60°
25
68°
60°
26
65°
59°
27
64°
60°
28
67°
58°
29
66°
59°
30
64°
57°
1
66°
56°
2
63°
57°
3
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Outer Sunset
Outer Sunset's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 54° and 60°. The average high for September is 66° with an average low of 58°. 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 Outer Sunset. See also: October | November | December.
