S
M
T
W
T
F
S
26
39°
23°
27
45°
20°
28
59°
27°
29
64°
36°
30
65°
39°
1
57°
33°
2
63°
37°
3
59°
39°
4
60°
37°
5
67°
37°
6
66°
44°
7
45°
35°
8
54°
29°
9
59°
37°
10
70°
41°
11
65°
34°
12
65°
44°
13
59°
46°
14
54°
38°
15
55°
35°
16
54°
40°
17
64°
36°
18
72°
40°
19
70°
42°
20
69°
48°
21
73°
50°
22
71°
42°
23
65°
42°
24
50°
44°
25
50°
40°
26
64°
37°
27
71°
46°
28
70°
47°
29
64°
48°
30
70°
45°
31
71°
43°
1
71°
37°
2
78°
39°
3
80°
52°
4
79°
46°
5
69°
49°
6
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Simpson
Fort Simpson's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Simpson. See also: June | July | August.
