S
M
T
W
T
F
S
30
82°
60°
31
82°
58°
1
83°
57°
2
79°
56°
3
78°
62°
4
82°
64°
5
84°
62°
6
85°
56°
7
78°
55°
8
78°
61°
9
80°
61°
10
80°
60°
11
78°
61°
12
77°
59°
13
77°
52°
14
75°
52°
15
74°
53°
16
76°
53°
17
75°
57°
18
79°
59°
19
81°
59°
20
82°
57°
21
80°
56°
22
79°
58°
23
79°
49°
24
81°
48°
25
72°
47°
26
72°
50°
27
72°
47°
28
Hist. Avg.
74°
50°
29
Hist. Avg.
73°
49°
30
Hist. Avg.
73°
49°
1
Hist. Avg.
72°
48°
2
Hist. Avg.
72°
48°
3
Hist. Avg.
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Campbell
Campbell's September 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 47° and 64°. The average high for September is 79° with an average low of 56°. 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 Campbell. See also: October | November | December.
