S
M
T
W
T
F
S
30
80°
53°
31
79°
52°
1
80°
52°
2
79°
51°
3
78°
52°
4
76°
52°
5
71°
51°
6
76°
48°
7
72°
42°
8
71°
43°
9
73°
41°
10
75°
42°
11
73°
49°
12
69°
47°
13
71°
49°
14
76°
45°
15
76°
47°
16
75°
45°
17
74°
50°
18
72°
46°
19
68°
47°
20
72°
48°
21
71°
47°
22
64°
46°
23
64°
46°
24
63°
44°
25
64°
42°
26
67°
39°
27
62°
39°
28
63°
42°
29
63°
42°
30
60°
40°
1
61°
38°
2
65°
39°
3
63°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Campbell River
Campbell River's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 37° and 53°. The average high for September is 70° with an average low of 46°. 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 River. See also: October | November | December.