S
M
T
W
T
F
S
26
100°
67°
27
100°
66°
28
99°
66°
29
100°
67°
30
100°
67°
31
99°
66°
1
99°
66°
2
100°
67°
3
100°
66°
4
99°
65°
5
98°
66°
6
97°
66°
7
99°
65°
8
100°
66°
9
100°
66°
10
99°
65°
11
99°
61°
12
94°
60°
13
93°
59°
14
94°
60°
15
97°
65°
16
98°
66°
17
98°
61°
18
96°
59°
19
96°
64°
20
95°
66°
21
99°
65°
22
98°
63°
23
98°
62°
24
99°
60°
25
96°
60°
26
96°
59°
27
95°
59°
28
95°
60°
29
96°
59°
30
95°
59°
31
95°
60°
1
94°
58°
2
93°
58°
3
93°
59°
4
94°
58°
5
93°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Perris Valley
Perris Valley's August 2026 forecast shows daily high temperatures ranging from 93° to 100°, with overnight lows between 58° and 67°. The average high for August is 97° with an average low of 63°. 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 Perris Valley. See also: September | October | November.
