S
M
T
W
T
F
S
26
93°
66°
27
89°
64°
28
88°
65°
29
88°
64°
30
89°
64°
31
91°
65°
1
92°
65°
2
89°
66°
3
95°
66°
4
93°
65°
5
94°
64°
6
95°
65°
7
96°
65°
8
95°
64°
9
96°
64°
10
95°
66°
11
95°
63°
12
90°
61°
13
93°
60°
14
87°
59°
15
85°
59°
16
87°
60°
17
88°
59°
18
87°
59°
19
87°
63°
20
88°
59°
21
89°
61°
22
92°
64°
23
89°
63°
24
90°
64°
25
92°
59°
26
88°
58°
27
87°
56°
28
85°
57°
29
86°
56°
30
85°
56°
31
85°
57°
1
86°
58°
2
84°
59°
3
85°
56°
4
84°
58°
5
88°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Valley
South Valley's August 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 56° and 66°. The average high for August is 90° with an average low of 61°. 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 South Valley. See also: September | October | November.
