S
M
T
W
T
F
S
26
98°
77°
27
97°
76°
28
97°
77°
29
96°
76°
30
96°
76°
31
95°
75°
1
94°
76°
2
96°
76°
3
96°
75°
4
97°
76°
5
97°
74°
6
90°
75°
7
93°
75°
8
90°
74°
9
91°
71°
10
90°
71°
11
91°
73°
12
92°
75°
13
95°
75°
14
96°
74°
15
97°
76°
16
97°
76°
17
98°
75°
18
98°
76°
19
97°
75°
20
98°
76°
21
91°
65°
22
89°
66°
23
90°
66°
24
89°
68°
25
92°
71°
26
94°
70°
27
96°
72°
28
96°
72°
29
94°
71°
30
96°
72°
31
95°
72°
1
95°
71°
2
94°
72°
3
95°
72°
4
96°
73°
5
95°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Smith
Fort Smith's August 2026 forecast shows daily high temperatures ranging from 89° to 98°, with overnight lows between 65° and 77°. The average high for August is 95° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fort Smith. See also: September | October | November.
