S
M
T
W
T
F
S
26
40°
24°
27
41°
26°
28
48°
25°
29
49°
28°
30
45°
28°
1
45°
29°
2
48°
30°
3
46°
31°
4
55°
38°
5
50°
31°
6
58°
36°
7
59°
37°
8
60°
38°
9
60°
37°
10
59°
35°
11
58°
36°
12
50°
34°
13
60°
34°
14
62°
39°
15
62°
33°
16
53°
29°
17
59°
32°
18
62°
36°
19
65°
40°
20
59°
34°
21
53°
30°
22
53°
31°
23
54°
31°
24
57°
35°
25
62°
42°
26
58°
39°
27
66°
42°
28
67°
44°
29
65°
44°
30
67°
43°
31
68°
44°
1
60°
35°
2
62°
35°
3
61°
34°
4
63°
41°
5
68°
46°
6
70°
49°
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 40° to 70°, with overnight lows between 24° and 49°. The average high for May is 57° 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 May weather will actually feel in Fort Smith. See also: June | July | August.
