S
M
T
W
T
F
S
26
90°
75°
27
91°
75°
28
91°
74°
29
90°
76°
30
93°
76°
31
93°
75°
1
92°
75°
2
93°
76°
3
93°
77°
4
94°
76°
5
94°
77°
6
95°
77°
7
94°
76°
8
94°
76°
9
93°
75°
10
92°
75°
11
92°
76°
12
93°
76°
13
93°
75°
14
92°
76°
15
93°
76°
16
93°
74°
17
93°
73°
18
92°
71°
19
92°
73°
20
91°
71°
21
92°
73°
22
89°
72°
23
90°
73°
24
89°
68°
25
86°
67°
26
86°
67°
27
87°
68°
28
85°
66°
29
85°
66°
30
86°
67°
31
87°
68°
1
89°
66°
2
89°
66°
3
90°
70°
4
90°
71°
5
89°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arkansas Post
Arkansas Post's August 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 66° and 77°. The average high for August is 91° 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 Arkansas Post. See also: September | October | November.