S
M
T
W
T
F
S
30
89°
70°
31
85°
65°
1
85°
63°
2
82°
63°
3
80°
66°
4
84°
64°
5
88°
70°
6
84°
67°
7
91°
68°
8
91°
70°
9
92°
69°
10
89°
68°
11
87°
67°
12
87°
69°
13
84°
68°
14
87°
67°
15
88°
68°
16
85°
65°
17
88°
68°
18
80°
63°
19
81°
63°
20
85°
65°
21
86°
67°
22
84°
67°
23
83°
66°
24
82°
65°
25
83°
66°
26
86°
67°
27
86°
68°
28
85°
67°
29
86°
66°
30
85°
67°
1
86°
66°
2
84°
66°
3
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in La Mirada
La Mirada's September 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 63° and 70°. The average high for September is 85° 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 La Mirada. See also: October | November | December.
