S
M
T
W
T
F
S
26
98°
66°
27
97°
65°
28
95°
61°
29
94°
60°
30
95°
61°
31
94°
60°
1
94°
60°
2
96°
63°
3
102°
66°
4
103°
65°
5
100°
66°
6
101°
67°
7
102°
66°
8
101°
64°
9
102°
62°
10
100°
63°
11
101°
65°
12
102°
65°
13
101°
64°
14
101°
63°
15
97°
62°
16
98°
60°
17
96°
60°
18
95°
59°
19
94°
60°
20
93°
59°
21
93°
59°
22
94°
60°
23
94°
59°
24
95°
63°
25
96°
66°
26
100°
63°
27
96°
64°
28
99°
63°
29
100°
63°
30
99°
64°
31
97°
64°
1
95°
62°
2
96°
61°
3
97°
60°
4
97°
62°
5
96°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Perris
Perris's August 2026 forecast shows daily high temperatures ranging from 93° to 103°, with overnight lows between 59° and 67°. The average high for August is 98° 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. See also: September | October | November.