S
M
T
W
T
F
S
30
80°
61°
31
82°
57°
1
82°
57°
2
82°
63°
3
81°
55°
4
88°
69°
5
88°
67°
6
87°
64°
7
76°
55°
8
81°
58°
9
85°
58°
10
86°
66°
11
85°
63°
12
87°
54°
13
76°
51°
14
77°
57°
15
78°
60°
16
80°
61°
17
83°
61°
18
79°
56°
19
77°
57°
20
76°
50°
21
78°
54°
22
68°
51°
23
68°
45°
24
70°
51°
25
68°
46°
26
71°
47°
27
72°
49°
28
66°
42°
29
65°
40°
30
62°
40°
1
63°
41°
2
64°
39°
3
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sunset
Sunset's September 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 39° and 66°. The average high for September is 74° with an average low of 52°. 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 Sunset. See also: October | November | December.
