S
M
T
W
T
F
S
30
87°
50°
31
85°
49°
1
84°
49°
2
89°
48°
3
92°
47°
4
92°
51°
5
93°
55°
6
95°
53°
7
N/A
8
96°
59°
9
95°
64°
10
92°
63°
11
90°
62°
12
88°
59°
13
90°
60°
14
90°
57°
15
91°
59°
16
92°
57°
17
91°
56°
18
91°
54°
19
93°
56°
20
93°
66°
21
93°
66°
22
92°
67°
23
93°
66°
24
90°
65°
25
91°
66°
26
92°
66°
27
93°
67°
28
93°
67°
29
94°
66°
30
94°
68°
1
93°
68°
2
94°
67°
3
94°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sunset
Sunset's September 2026 forecast shows daily high temperatures ranging from 88° to 96°, with overnight lows between 54° and 68°. The average high for September is 92° with an average low of 63°. 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.