S
M
T
W
T
F
S
30
64°
52°
31
70°
54°
1
71°
54°
2
70°
53°
3
70°
52°
4
69°
54°
5
67°
53°
6
66°
53°
7
63°
48°
8
68°
48°
9
71°
53°
10
71°
53°
11
63°
50°
12
69°
53°
13
71°
54°
14
72°
53°
15
70°
53°
16
71°
52°
17
71°
52°
18
69°
51°
19
65°
50°
20
66°
49°
21
65°
50°
22
69°
49°
23
63°
45°
24
62°
42°
25
61°
46°
26
62°
49°
27
67°
49°
28
68°
48°
29
69°
48°
30
67°
46°
1
64°
48°
2
67°
48°
3
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Long Beach
Long Beach's September 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 42° and 54°. The average high for September is 67° with an average low of 50°. 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 Long Beach. See also: October | November | December.
