S
M
T
W
T
F
S
30
80°
69°
31
80°
69°
1
79°
68°
2
80°
68°
3
78°
67°
4
77°
68°
5
76°
68°
6
77°
66°
7
79°
68°
8
80°
68°
9
80°
69°
10
79°
69°
11
80°
68°
12
80°
68°
13
79°
67°
14
73°
67°
15
74°
64°
16
76°
66°
17
79°
67°
18
80°
65°
19
79°
64°
20
79°
64°
21
78°
65°
22
77°
63°
23
75°
64°
24
78°
66°
25
79°
68°
26
80°
68°
27
80°
67°
28
81°
67°
29
80°
65°
30
79°
61°
1
77°
62°
2
72°
60°
3
70°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in El Segundo
El Segundo's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 58° and 69°. The average high for September is 78° with an average low of 66°. 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 El Segundo. See also: October | November | December.
