S
M
T
W
T
F
S
26
90°
64°
27
93°
64°
28
90°
63°
29
89°
64°
30
89°
62°
31
94°
62°
1
94°
62°
2
93°
64°
3
90°
62°
4
85°
63°
5
86°
62°
6
89°
63°
7
91°
64°
8
96°
65°
9
94°
67°
10
90°
67°
11
91°
68°
12
86°
64°
13
81°
64°
14
81°
64°
15
84°
62°
16
89°
62°
17
92°
61°
18
93°
65°
19
99°
65°
20
94°
65°
21
98°
69°
22
95°
69°
23
102°
72°
24
102°
71°
25
102°
73°
26
103°
74°
27
108°
72°
28
105°
71°
29
103°
67°
30
101°
66°
31
99°
66°
1
97°
65°
2
97°
66°
3
98°
67°
4
91°
62°
5
95°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chino Hills
Chino Hills's August 2026 forecast shows daily high temperatures ranging from 91° to 108°, with overnight lows between 62° and 74°. The average high for August is 100° with an average low of 68°. 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 Chino Hills. See also: September | October | November.