S
M
T
W
T
F
S
30
85°
67°
31
86°
65°
1
86°
65°
2
87°
64°
3
84°
62°
4
83°
63°
5
82°
63°
6
83°
64°
7
84°
65°
8
86°
63°
9
84°
62°
10
83°
62°
11
83°
64°
12
84°
65°
13
86°
67°
14
88°
67°
15
89°
68°
16
89°
70°
17
90°
67°
18
90°
68°
19
87°
68°
20
88°
66°
21
87°
65°
22
86°
63°
23
82°
65°
24
84°
64°
25
88°
66°
26
82°
63°
27
83°
60°
28
Hist. Avg.
84°
65°
29
Hist. Avg.
84°
65°
30
Hist. Avg.
84°
65°
1
Hist. Avg.
83°
64°
2
Hist. Avg.
83°
64°
3
Hist. Avg.
83°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in La Mirada
La Mirada's September 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 60° and 70°. The average high for September is 85° with an average low of 65°. 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 La Mirada. See also: October | November | December.
