S
M
T
W
T
F
S
31
78°
60°
1
78°
58°
2
79°
59°
3
78°
57°
4
74°
56°
5
74°
56°
6
75°
57°
7
76°
60°
8
83°
62°
9
84°
64°
10
83°
63°
11
84°
60°
12
81°
62°
13
83°
64°
14
84°
64°
15
85°
63°
16
85°
63°
17
84°
64°
18
84°
65°
19
85°
66°
20
86°
66°
21
86°
65°
22
87°
66°
23
87°
65°
24
85°
65°
25
85°
64°
26
86°
65°
27
86°
65°
28
87°
62°
29
85°
61°
30
82°
62°
1
84°
61°
2
86°
62°
3
87°
60°
4
85°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Brea
Brea's June 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 56° and 66°. The average high for June is 83° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Brea. See also: July | August | September.