S
M
T
W
T
F
S
26
86°
66°
27
85°
65°
28
85°
66°
29
84°
65°
30
85°
64°
31
85°
62°
1
83°
60°
2
80°
59°
3
79°
60°
4
80°
62°
5
80°
65°
6
84°
66°
7
86°
66°
8
85°
67°
9
86°
67°
10
86°
66°
11
85°
67°
12
84°
64°
13
85°
66°
14
84°
65°
15
83°
67°
16
84°
67°
17
86°
66°
18
85°
66°
19
86°
65°
20
86°
63°
21
83°
61°
22
81°
61°
23
81°
65°
24
82°
66°
25
85°
65°
26
81°
61°
27
80°
60°
28
80°
60°
29
81°
62°
30
79°
61°
31
81°
62°
1
82°
61°
2
83°
61°
3
82°
62°
4
81°
60°
5
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Spring Valley
Spring Valley's August 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 59° and 67°. The average high for August is 83° with an average low of 64°. 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 Spring Valley. See also: September | October | November.