S
M
T
W
T
F
S
26
87°
69°
27
87°
70°
28
89°
64°
29
89°
64°
30
89°
66°
31
92°
68°
1
94°
70°
2
94°
70°
3
91°
69°
4
89°
68°
5
90°
69°
6
93°
70°
7
92°
70°
8
92°
68°
9
88°
69°
10
87°
66°
11
88°
68°
12
86°
67°
13
85°
67°
14
87°
68°
15
86°
68°
16
88°
68°
17
89°
68°
18
90°
69°
19
91°
69°
20
91°
68°
21
90°
69°
22
90°
68°
23
91°
69°
24
91°
69°
25
90°
68°
26
90°
66°
27
85°
65°
28
84°
63°
29
83°
62°
30
84°
62°
31
84°
63°
1
85°
62°
2
84°
62°
3
83°
61°
4
83°
61°
5
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brea
Brea's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 61° and 70°. The average high for August is 88° with an average low of 67°. 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. See also: September | October | November.
