S
M
T
W
T
F
S
26
88°
64°
27
90°
64°
28
91°
63°
29
92°
65°
30
93°
65°
31
92°
64°
1
85°
60°
2
85°
60°
3
89°
63°
4
87°
60°
5
86°
61°
6
90°
63°
7
89°
62°
8
84°
63°
9
87°
63°
10
91°
64°
11
93°
63°
12
92°
58°
13
88°
57°
14
86°
58°
15
87°
57°
16
88°
60°
17
88°
63°
18
92°
63°
19
93°
61°
20
91°
58°
21
88°
55°
22
84°
54°
23
83°
54°
24
83°
58°
25
84°
56°
26
89°
58°
27
88°
60°
28
90°
62°
29
91°
62°
30
89°
60°
31
90°
59°
1
89°
57°
2
86°
56°
3
85°
58°
4
87°
59°
5
88°
62°
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 83° to 93°, with overnight lows between 54° and 65°. The average high for August is 88° with an average low of 60°. 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.