S
M
T
W
T
F
S
26
90°
61°
27
94°
61°
28
94°
61°
29
91°
59°
30
92°
60°
31
93°
58°
1
94°
58°
2
92°
58°
3
90°
57°
4
91°
56°
5
92°
57°
6
92°
59°
7
93°
62°
8
95°
62°
9
95°
61°
10
96°
62°
11
96°
61°
12
95°
58°
13
93°
58°
14
91°
55°
15
90°
55°
16
90°
56°
17
91°
59°
18
93°
62°
19
95°
63°
20
96°
64°
21
97°
63°
22
96°
60°
23
97°
61°
24
96°
60°
25
95°
59°
26
93°
57°
27
91°
55°
28
90°
55°
29
90°
57°
30
91°
59°
31
94°
62°
1
96°
62°
2
97°
63°
3
97°
62°
4
96°
61°
5
97°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Valley Center
Valley Center's August 2026 forecast shows daily high temperatures ranging from 90° to 97°, with overnight lows between 55° and 64°. The average high for August is 94° 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 Valley Center. See also: September | October | November.