S
M
T
W
T
F
S
30
94°
72°
31
92°
70°
1
91°
67°
2
90°
66°
3
91°
70°
4
94°
68°
5
95°
69°
6
94°
70°
7
92°
70°
8
94°
69°
9
94°
65°
10
90°
64°
11
90°
68°
12
93°
63°
13
88°
62°
14
86°
61°
15
87°
62°
16
86°
62°
17
90°
61°
18
92°
64°
19
Hist. Avg.
89°
64°
20
Hist. Avg.
89°
63°
21
Hist. Avg.
88°
63°
22
Hist. Avg.
88°
62°
23
Hist. Avg.
88°
62°
24
Hist. Avg.
87°
62°
25
Hist. Avg.
87°
61°
26
Hist. Avg.
87°
61°
27
Hist. Avg.
86°
60°
28
Hist. Avg.
86°
60°
29
Hist. Avg.
86°
60°
30
Hist. Avg.
85°
59°
1
Hist. Avg.
85°
59°
2
Hist. Avg.
85°
58°
3
Hist. Avg.
84°
58°
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 86° to 95°, with overnight lows between 61° and 72°. The average high for September is 91° with an average low of 66°. 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.
