S
M
T
W
T
F
S
30
67°
42°
31
64°
42°
1
68°
46°
2
69°
47°
3
67°
44°
4
67°
38°
5
60°
38°
6
59°
37°
7
62°
43°
8
60°
42°
9
60°
39°
10
58°
36°
11
58°
40°
12
59°
37°
13
58°
37°
14
55°
34°
15
56°
34°
16
57°
36°
17
59°
44°
18
60°
43°
19
63°
43°
20
63°
38°
21
55°
36°
22
54°
32°
23
54°
32°
24
53°
33°
25
55°
35°
26
57°
36°
27
56°
41°
28
59°
38°
29
60°
38°
30
52°
32°
1
61°
42°
2
61°
32°
3
Hist. Avg.
54°
35°
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 52° to 69°, with overnight lows between 32° and 47°. The average high for September is 60° with an average low of 38°. 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.
