S
M
T
W
T
F
S
30
69°
49°
31
72°
51°
1
69°
53°
2
68°
51°
3
69°
48°
4
69°
49°
5
67°
47°
6
67°
46°
7
68°
47°
8
70°
47°
9
73°
53°
10
72°
52°
11
73°
52°
12
73°
51°
13
72°
51°
14
66°
44°
15
69°
44°
16
69°
47°
17
70°
50°
18
64°
45°
19
65°
49°
20
69°
49°
21
70°
51°
22
69°
49°
23
62°
48°
24
61°
45°
25
61°
41°
26
60°
40°
27
60°
40°
28
61°
41°
29
59°
47°
30
58°
41°
1
58°
46°
2
59°
42°
3
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Comox
Comox's September 2026 forecast shows daily high temperatures ranging from 57° to 73°, with overnight lows between 40° and 53°. The average high for September is 66° with an average low of 47°. 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 Comox. See also: October | November | December.