S
M
T
W
T
F
S
30
76°
66°
31
77°
67°
1
81°
61°
2
76°
61°
3
77°
62°
4
76°
60°
5
76°
60°
6
78°
63°
7
79°
62°
8
77°
65°
9
80°
64°
10
75°
64°
11
78°
63°
12
80°
63°
13
79°
64°
14
80°
64°
15
80°
63°
16
79°
57°
17
77°
60°
18
71°
63°
19
77°
62°
20
78°
62°
21
77°
60°
22
76°
54°
23
Hist. Avg.
73°
58°
24
Hist. Avg.
73°
58°
25
Hist. Avg.
73°
58°
26
Hist. Avg.
72°
57°
27
Hist. Avg.
72°
57°
28
Hist. Avg.
72°
57°
29
Hist. Avg.
71°
56°
30
Hist. Avg.
71°
56°
1
Hist. Avg.
70°
56°
2
Hist. Avg.
70°
55°
3
Hist. Avg.
70°
55°
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 71° to 81°, with overnight lows between 54° and 67°. The average high for September is 78° with an average low of 62°. 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.
