S
M
T
W
T
F
S
30
82°
70°
31
82°
68°
1
77°
65°
2
76°
62°
3
74°
62°
4
74°
63°
5
82°
61°
6
90°
70°
7
89°
73°
8
94°
73°
9
94°
73°
10
89°
71°
11
80°
71°
12
79°
68°
13
80°
67°
14
79°
67°
15
76°
67°
16
74°
68°
17
76°
64°
18
75°
61°
19
76°
63°
20
76°
63°
21
75°
66°
22
76°
66°
23
78°
66°
24
76°
67°
25
79°
66°
26
79°
67°
27
78°
65°
28
81°
56°
29
85°
60°
30
86°
61°
1
83°
60°
2
85°
60°
3
84°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Camp Pendleton
Camp Pendleton's September 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 56° and 67°. The average high for September is 81° 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 Camp Pendleton. See also: October | November | December.