S
M
T
W
T
F
S
30
79°
61°
31
78°
62°
1
78°
62°
2
79°
61°
3
78°
61°
4
77°
62°
5
78°
61°
6
79°
62°
7
80°
61°
8
80°
61°
9
80°
62°
10
79°
61°
11
79°
61°
12
80°
62°
13
81°
63°
14
82°
67°
15
83°
65°
16
85°
67°
17
83°
68°
18
86°
68°
19
86°
69°
20
87°
69°
21
87°
67°
22
83°
66°
23
79°
66°
24
84°
62°
25
83°
64°
26
82°
66°
27
83°
66°
28
84°
65°
29
83°
64°
30
84°
65°
1
83°
67°
2
84°
66°
3
83°
66°
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 77° to 87°, with overnight lows between 61° and 69°. 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.
