S
M
T
W
T
F
S
30
80°
66°
31
82°
64°
1
82°
63°
2
83°
62°
3
80°
61°
4
79°
60°
5
78°
62°
6
79°
63°
7
80°
64°
8
82°
62°
9
80°
61°
10
80°
61°
11
79°
63°
12
80°
64°
13
82°
66°
14
85°
66°
15
85°
67°
16
84°
68°
17
86°
67°
18
86°
67°
19
84°
66°
20
85°
67°
21
84°
64°
22
83°
62°
23
78°
63°
24
80°
64°
25
84°
66°
26
Hist. Avg.
81°
63°
27
Hist. Avg.
81°
63°
28
Hist. Avg.
80°
62°
29
Hist. Avg.
80°
62°
30
Hist. Avg.
80°
62°
1
Hist. Avg.
80°
62°
2
Hist. Avg.
80°
62°
3
Hist. Avg.
79°
62°
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 78° to 86°, with overnight lows between 60° and 68°. The average high for September is 82° with an average low of 64°. 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.
