S
M
T
W
T
F
S
26
81°
51°
27
81°
51°
28
80°
49°
29
80°
50°
30
81°
48°
31
82°
50°
1
82°
50°
2
81°
49°
3
86°
48°
4
87°
49°
5
86°
49°
6
87°
48°
7
87°
49°
8
86°
47°
9
85°
46°
10
86°
45°
11
86°
46°
12
85°
48°
13
86°
47°
14
86°
46°
15
84°
48°
16
82°
47°
17
81°
45°
18
81°
44°
19
80°
44°
20
80°
47°
21
82°
46°
22
82°
45°
23
83°
45°
24
84°
44°
25
84°
47°
26
85°
46°
27
85°
46°
28
84°
45°
29
82°
45°
30
81°
43°
31
80°
43°
1
80°
45°
2
82°
45°
3
84°
46°
4
85°
46°
5
85°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Arnold
Arnold's August 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 43° and 51°. The average high for August is 83° with an average low of 47°. 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 Arnold. See also: September | October | November.