S
M
T
W
T
F
S
30
78°
64°
31
86°
70°
1
92°
75°
2
91°
73°
3
90°
73°
4
88°
73°
5
81°
68°
6
77°
59°
7
N/A
8
82°
74°
9
79°
70°
10
74°
59°
11
79°
66°
12
80°
67°
13
75°
66°
14
79°
63°
15
69°
61°
16
67°
60°
17
69°
58°
18
67°
56°
19
65°
55°
20
66°
59°
21
71°
56°
22
68°
59°
23
69°
59°
24
75°
58°
25
76°
60°
26
76°
59°
27
75°
60°
28
76°
60°
29
76°
59°
30
75°
60°
1
74°
56°
2
72°
50°
3
61°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Long Beach
Long Beach's September 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 47° and 74°. The average high for September is 73° with an average low of 60°. 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.
