S
M
T
W
T
F
S
30
92°
75°
31
92°
74°
1
91°
73°
2
92°
75°
3
92°
76°
4
91°
75°
5
92°
74°
6
91°
75°
7
90°
74°
8
91°
75°
9
91°
76°
10
90°
76°
11
91°
75°
12
91°
75°
13
90°
74°
14
90°
75°
15
91°
75°
16
91°
74°
17
90°
75°
18
91°
74°
19
90°
74°
20
91°
75°
21
90°
74°
22
91°
75°
23
90°
74°
24
91°
75°
25
91°
74°
26
92°
74°
27
91°
73°
28
91°
74°
29
90°
74°
30
91°
73°
1
91°
74°
2
90°
74°
3
91°
73°
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 90° to 92°, with overnight lows between 73° and 76°. The average high for September is 91° with an average low of 74°. 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.