S
M
T
W
T
F
S
30
64°
51°
31
60°
50°
1
71°
54°
2
74°
50°
3
67°
53°
4
70°
46°
5
72°
35°
6
72°
39°
7
75°
42°
8
74°
43°
9
65°
52°
10
62°
46°
11
59°
40°
12
64°
32°
13
66°
34°
14
68°
40°
15
66°
39°
16
70°
34°
17
70°
37°
18
73°
43°
19
72°
42°
20
72°
41°
21
58°
39°
22
58°
43°
23
58°
30°
24
58°
40°
25
47°
36°
26
57°
36°
27
55°
37°
28
54°
40°
29
57°
38°
30
54°
36°
1
55°
31°
2
52°
33°
3
50°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort St James
Fort St James's September 2026 forecast shows daily high temperatures ranging from 47° to 58°, with overnight lows between 30° and 40°. The average high for September is 54° with an average low of 35°. 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 Fort St James. See also: October | November | December.
