S
M
T
W
T
F
S
26
82°
58°
27
82°
58°
28
85°
59°
29
87°
61°
30
88°
60°
31
84°
62°
1
81°
60°
2
88°
62°
3
88°
62°
4
87°
60°
5
88°
61°
6
89°
62°
7
88°
62°
8
88°
61°
9
86°
60°
10
85°
61°
11
86°
61°
12
85°
60°
13
86°
60°
14
88°
55°
15
80°
58°
16
83°
55°
17
82°
54°
18
80°
55°
19
79°
54°
20
79°
53°
21
80°
56°
22
84°
56°
23
83°
57°
24
85°
58°
25
86°
58°
26
83°
56°
27
82°
56°
28
82°
54°
29
83°
53°
30
80°
52°
31
82°
52°
1
81°
51°
2
80°
55°
3
83°
56°
4
85°
51°
5
83°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in The Valley
The Valley's August 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 48° and 62°. The average high for August is 84° with an average low of 57°. 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 The Valley. See also: September | October | November.