S
M
T
W
T
F
S
30
91°
70°
31
86°
66°
1
84°
62°
2
83°
61°
3
83°
65°
4
84°
64°
5
91°
62°
6
76°
66°
7
93°
71°
8
92°
74°
9
105°
77°
10
98°
76°
11
90°
70°
12
86°
67°
13
84°
68°
14
83°
66°
15
83°
67°
16
83°
68°
17
84°
69°
18
87°
68°
19
88°
70°
20
85°
69°
21
83°
68°
22
82°
67°
23
83°
68°
24
82°
64°
25
77°
62°
26
83°
64°
27
84°
65°
28
80°
62°
29
83°
64°
30
84°
67°
1
84°
67°
2
83°
66°
3
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Los Angeles
Los Angeles's September 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 62° and 70°. The average high for September is 84° with an average low of 67°. 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 Los Angeles. See also: October | November | December.