S
M
T
W
T
F
S
26
96°
73°
27
96°
73°
28
97°
72°
29
97°
73°
30
96°
73°
31
97°
72°
1
97°
73°
2
96°
73°
3
97°
72°
4
97°
72°
5
96°
72°
6
95°
72°
7
91°
68°
8
96°
66°
9
97°
65°
10
89°
67°
11
91°
69°
12
96°
62°
13
90°
62°
14
87°
67°
15
89°
69°
16
95°
69°
17
96°
64°
18
95°
61°
19
88°
60°
20
87°
61°
21
88°
65°
22
93°
68°
23
95°
67°
24
95°
69°
25
93°
69°
26
94°
67°
27
92°
63°
28
86°
59°
29
84°
58°
30
85°
59°
31
84°
60°
1
85°
59°
2
84°
58°
3
82°
58°
4
81°
60°
5
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arnett
Arnett's August 2026 forecast shows daily high temperatures ranging from 81° to 97°, with overnight lows between 58° and 73°. The average high for August is 92° with an average low of 66°. 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 Arnett. See also: September | October | November.