S
M
T
W
T
F
S
30
84°
72°
31
83°
68°
1
84°
65°
2
82°
64°
3
78°
65°
4
78°
64°
5
89°
65°
6
78°
66°
7
92°
73°
8
96°
74°
9
107°
76°
10
89°
74°
11
83°
73°
12
81°
72°
13
82°
71°
14
79°
70°
15
78°
70°
16
78°
69°
17
80°
69°
18
79°
64°
19
80°
65°
20
79°
68°
21
78°
68°
22
80°
67°
23
85°
64°
24
78°
69°
25
81°
69°
26
82°
71°
27
83°
69°
28
81°
68°
29
82°
69°
30
84°
67°
1
88°
66°
2
83°
65°
3
84°
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 81° to 88°, with overnight lows between 65° and 71°. The average high for September is 83° with an average low of 68°. 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.
