S
M
T
W
T
F
S
26
45°
23°
27
41°
28°
28
55°
23°
29
54°
32°
30
61°
28°
1
70°
30°
2
77°
39°
3
75°
45°
4
57°
45°
5
50°
32°
6
61°
23°
7
63°
43°
8
72°
39°
9
68°
45°
10
77°
41°
11
84°
52°
12
79°
45°
13
95°
46°
14
75°
52°
15
73°
43°
16
73°
36°
17
54°
39°
18
48°
32°
19
63°
25°
20
68°
36°
21
52°
37°
22
64°
34°
23
77°
56°
24
83°
60°
25
89°
61°
26
88°
58°
27
82°
54°
28
82°
56°
29
84°
56°
30
79°
54°
31
80°
56°
1
80°
55°
2
79°
58°
3
84°
58°
4
83°
57°
5
75°
50°
6
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Smith
Fort Smith's May 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 50° and 61°. The average high for May is 82° with an average low of 56°. 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 Smith. See also: June | July | August.
