S
M
T
W
T
F
S
26
101°
71°
27
99°
71°
28
100°
67°
29
97°
64°
30
99°
64°
31
106°
67°
1
105°
71°
2
103°
71°
3
100°
68°
4
96°
68°
5
96°
67°
6
99°
68°
7
100°
71°
8
106°
71°
9
102°
72°
10
96°
72°
11
95°
71°
12
91°
66°
13
84°
66°
14
89°
65°
15
92°
64°
16
95°
66°
17
100°
65°
18
103°
69°
19
104°
68°
20
102°
71°
21
103°
74°
22
102°
70°
23
104°
73°
24
107°
71°
25
104°
73°
26
N/A
27
106°
73°
28
107°
69°
29
103°
67°
30
98°
59°
31
94°
61°
1
92°
60°
2
90°
64°
3
95°
62°
4
92°
63°
5
92°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Perris
Perris's August 2026 forecast shows daily high temperatures ranging from 90° to 107°, with overnight lows between 59° and 73°. The average high for August is 97° 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 Perris. See also: September | October | November.