S
M
T
W
T
F
S
26
83°
63°
27
83°
64°
28
84°
65°
29
84°
64°
30
86°
65°
31
88°
67°
1
90°
69°
2
90°
69°
3
89°
68°
4
89°
67°
5
88°
66°
6
87°
66°
7
87°
67°
8
88°
67°
9
88°
69°
10
89°
66°
11
89°
63°
12
89°
63°
13
88°
64°
14
87°
69°
15
88°
68°
16
90°
69°
17
92°
69°
18
92°
68°
19
91°
69°
20
92°
69°
21
92°
68°
22
91°
68°
23
92°
67°
24
92°
68°
25
91°
69°
26
91°
68°
27
90°
68°
28
90°
65°
29
89°
64°
30
86°
66°
31
88°
64°
1
88°
63°
2
89°
62°
3
86°
61°
4
85°
62°
5
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brea Chem
Brea Chem's August 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 61° and 69°. The average high for August is 88° with an average low of 66°. 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 Brea Chem. See also: September | October | November.
