S
M
T
W
T
F
S
30
69°
51°
31
75°
50°
1
68°
57°
2
64°
56°
3
65°
54°
4
70°
51°
5
68°
50°
6
69°
50°
7
68°
52°
8
73°
48°
9
77°
49°
10
66°
51°
11
66°
50°
12
61°
53°
13
65°
53°
14
68°
53°
15
64°
51°
16
75°
45°
17
73°
58°
18
65°
56°
19
67°
56°
20
65°
56°
21
63°
55°
22
65°
46°
23
66°
48°
24
67°
49°
25
66°
48°
26
65°
50°
27
68°
50°
28
65°
49°
29
65°
48°
30
64°
43°
1
60°
41°
2
60°
48°
3
60°
45°
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 60° to 73°, with overnight lows between 41° and 58°. The average high for September is 65° 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.
