S
M
T
W
T
F
S
30
59°
53°
31
58°
54°
1
57°
52°
2
63°
49°
3
61°
47°
4
73°
48°
5
67°
49°
6
58°
53°
7
60°
49°
8
58°
54°
9
60°
54°
10
59°
51°
11
73°
50°
12
66°
45°
13
58°
51°
14
60°
52°
15
56°
45°
16
60°
49°
17
59°
46°
18
63°
44°
19
62°
55°
20
61°
52°
21
55°
49°
22
57°
47°
23
58°
45°
24
59°
46°
25
58°
46°
26
59°
49°
27
59°
50°
28
58°
48°
29
57°
48°
30
58°
49°
1
59°
51°
2
58°
44°
3
54°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prince Rupert
Prince Rupert's September 2026 forecast shows daily high temperatures ranging from 54° to 62°, with overnight lows between 44° and 55°. The average high for September is 58° with an average low of 48°. 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 Prince Rupert. See also: October | November | December.
