S
M
T
W
T
F
S
26
79°
59°
27
80°
53°
28
75°
53°
29
76°
58°
30
77°
56°
31
76°
52°
1
77°
53°
2
76°
51°
3
75°
53°
4
75°
51°
5
76°
51°
6
75°
55°
7
77°
57°
8
76°
57°
9
75°
60°
10
77°
57°
11
76°
59°
12
82°
58°
13
78°
59°
14
83°
52°
15
75°
51°
16
75°
52°
17
77°
52°
18
75°
50°
19
74°
52°
20
74°
51°
21
75°
52°
22
74°
49°
23
73°
56°
24
73°
53°
25
74°
52°
26
77°
58°
27
80°
58°
28
79°
57°
29
82°
52°
30
81°
49°
31
72°
48°
1
72°
48°
2
73°
56°
3
76°
53°
4
76°
47°
5
72°
48°
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 72° to 83°, with overnight lows between 47° and 60°. The average high for August is 76° with an average low of 54°. 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.