S
M
T
W
T
F
S
30
62°
56°
31
71°
56°
1
71°
54°
2
64°
56°
3
66°
54°
4
63°
55°
5
70°
55°
6
71°
51°
7
68°
58°
8
70°
57°
9
73°
54°
10
74°
50°
11
64°
50°
12
78°
49°
13
72°
51°
14
68°
51°
15
72°
52°
16
70°
51°
17
69°
50°
18
70°
55°
19
68°
54°
20
68°
53°
21
67°
52°
22
68°
46°
23
63°
49°
24
62°
48°
25
61°
49°
26
61°
45°
27
60°
43°
28
59°
45°
29
59°
43°
30
60°
46°
1
58°
47°
2
59°
45°
3
60°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Courtenay
Courtenay's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 41° and 55°. The average high for September is 66° with an average low of 49°. 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 Courtenay. See also: October | November | December.
