S
M
T
W
T
F
S
26
54°
31°
27
63°
28°
28
62°
33°
29
68°
28°
30
66°
33°
1
65°
30°
2
70°
30°
3
70°
35°
4
71°
37°
5
73°
34°
6
70°
38°
7
73°
33°
8
65°
38°
9
64°
44°
10
63°
42°
11
65°
35°
12
70°
33°
13
67°
45°
14
60°
40°
15
56°
33°
16
62°
28°
17
63°
32°
18
63°
32°
19
62°
39°
20
68°
28°
21
71°
46°
22
71°
42°
23
55°
44°
24
54°
34°
25
56°
43°
26
65°
39°
27
72°
42°
28
76°
39°
29
61°
47°
30
59°
31°
31
65°
33°
1
73°
41°
2
69°
42°
3
72°
49°
4
61°
42°
5
58°
41°
6
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort St James
Fort St James's May 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 31° and 49°. The average high for May is 66° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Fort St James. See also: June | July | August.