S
M
T
W
T
F
S
26
95°
71°
27
94°
71°
28
93°
72°
29
94°
74°
30
92°
75°
31
94°
74°
1
96°
75°
2
99°
71°
3
98°
75°
4
97°
71°
5
97°
76°
6
99°
75°
7
97°
77°
8
98°
75°
9
98°
75°
10
98°
73°
11
94°
71°
12
92°
70°
13
92°
69°
14
96°
69°
15
92°
68°
16
95°
72°
17
99°
75°
18
98°
71°
19
97°
74°
20
98°
71°
21
93°
70°
22
94°
72°
23
Hist. Avg.
93°
70°
24
Hist. Avg.
93°
70°
25
Hist. Avg.
92°
70°
26
Hist. Avg.
92°
70°
27
Hist. Avg.
92°
69°
28
Hist. Avg.
92°
69°
29
Hist. Avg.
92°
69°
30
Hist. Avg.
91°
69°
31
Hist. Avg.
91°
68°
1
Hist. Avg.
91°
68°
2
Hist. Avg.
90°
68°
3
Hist. Avg.
90°
68°
4
Hist. Avg.
90°
67°
5
Hist. Avg.
90°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Fort Smith
Fort Smith's August 2026 forecast shows daily high temperatures ranging from 92° to 99°, with overnight lows between 68° and 77°. The average high for August is 96° 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.
