S
M
T
W
T
F
S
26
83°
63°
27
85°
63°
28
80°
62°
29
80°
62°
30
82°
63°
31
86°
64°
1
85°
63°
2
85°
63°
3
87°
63°
4
87°
62°
5
81°
59°
6
83°
60°
7
81°
56°
8
79°
57°
9
78°
56°
10
79°
56°
11
82°
61°
12
87°
62°
13
82°
58°
14
86°
54°
15
80°
55°
16
81°
62°
17
85°
59°
18
79°
55°
19
79°
55°
20
82°
56°
21
82°
58°
22
86°
60°
23
86°
60°
24
85°
59°
25
86°
59°
26
84°
60°
27
85°
56°
28
84°
60°
29
85°
60°
30
84°
53°
31
78°
50°
1
77°
50°
2
77°
51°
3
76°
51°
4
77°
52°
5
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in West Valley
West Valley's August 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 50° and 64°. The average high for August is 82° with an average low of 58°. 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 West Valley. See also: September | October | November.