S
M
T
W
T
F
S
30
80°
53°
31
79°
52°
1
79°
51°
2
78°
49°
3
78°
46°
4
77°
47°
5
74°
45°
6
70°
44°
7
69°
48°
8
69°
50°
9
70°
50°
10
68°
45°
11
68°
42°
12
69°
44°
13
66°
46°
14
67°
44°
15
67°
44°
16
68°
43°
17
67°
47°
18
70°
49°
19
73°
46°
20
72°
42°
21
66°
40°
22
64°
40°
23
64°
42°
24
65°
42°
25
62°
40°
26
62°
41°
27
63°
45°
28
63°
40°
29
61°
42°
30
62°
40°
1
63°
45°
2
64°
47°
3
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Alberni
Port Alberni's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 40° and 53°. The average high for September is 69° with an average low of 45°. 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 Port Alberni. See also: October | November | December.
