S
M
T
W
T
F
S
30
97°
63°
31
95°
62°
1
91°
62°
2
93°
61°
3
95°
62°
4
95°
64°
5
94°
63°
6
96°
65°
7
96°
65°
8
95°
63°
9
89°
62°
10
90°
62°
11
91°
63°
12
90°
64°
13
92°
62°
14
95°
64°
15
94°
62°
16
91°
60°
17
90°
59°
18
88°
62°
19
87°
60°
20
Hist. Avg.
87°
54°
21
Hist. Avg.
87°
54°
22
Hist. Avg.
86°
54°
23
Hist. Avg.
86°
53°
24
Hist. Avg.
86°
53°
25
Hist. Avg.
85°
53°
26
Hist. Avg.
85°
52°
27
Hist. Avg.
84°
52°
28
Hist. Avg.
84°
52°
29
Hist. Avg.
84°
51°
30
Hist. Avg.
83°
51°
1
Hist. Avg.
83°
51°
2
Hist. Avg.
82°
50°
3
Hist. Avg.
82°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lake Los Angeles
Lake Los Angeles's September 2026 forecast shows daily high temperatures ranging from 87° to 97°, with overnight lows between 59° and 65°. The average high for September is 93° with an average low of 62°. 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 Lake Los Angeles. See also: October | November | December.