S
M
T
W
T
F
S
30
85°
67°
31
87°
69°
1
89°
69°
2
90°
70°
3
90°
70°
4
89°
69°
5
90°
69°
6
89°
68°
7
84°
67°
8
85°
63°
9
83°
65°
10
82°
67°
11
81°
65°
12
82°
69°
13
82°
68°
14
83°
64°
15
83°
62°
16
87°
62°
17
84°
61°
18
Hist. Avg.
82°
63°
19
Hist. Avg.
82°
63°
20
Hist. Avg.
81°
63°
21
Hist. Avg.
81°
63°
22
Hist. Avg.
81°
63°
23
Hist. Avg.
81°
62°
24
Hist. Avg.
81°
62°
25
Hist. Avg.
80°
62°
26
Hist. Avg.
80°
62°
27
Hist. Avg.
80°
62°
28
Hist. Avg.
80°
62°
29
Hist. Avg.
80°
62°
30
Hist. Avg.
79°
61°
1
Hist. Avg.
79°
61°
2
Hist. Avg.
79°
61°
3
Hist. Avg.
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cerritos
Cerritos's September 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 61° and 70°. The average high for September is 86° 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 Cerritos. See also: October | November | December.
