S
M
T
W
T
F
S
31
78°
59°
1
77°
63°
2
80°
58°
3
82°
58°
4
84°
60°
5
79°
60°
6
78°
63°
7
77°
62°
8
78°
62°
9
83°
62°
10
84°
64°
11
83°
63°
12
83°
65°
13
84°
63°
14
85°
64°
15
81°
61°
16
84°
64°
17
85°
66°
18
85°
65°
19
84°
65°
20
85°
64°
21
85°
65°
22
86°
66°
23
86°
66°
24
85°
65°
25
86°
66°
26
85°
65°
27
86°
64°
28
84°
62°
29
83°
62°
30
85°
63°
1
85°
64°
2
87°
67°
3
87°
67°
4
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Brea Chem
Brea Chem's June 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 58° and 67°. The average high for June is 84° 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 June weather will actually feel in Brea Chem. See also: July | August | September.