S
M
T
W
T
F
S
26
70°
53°
27
71°
52°
28
78°
53°
29
76°
56°
30
75°
58°
1
77°
61°
2
78°
60°
3
76°
58°
4
75°
59°
5
79°
60°
6
77°
59°
7
78°
59°
8
77°
57°
9
81°
60°
10
80°
59°
11
79°
59°
12
80°
60°
13
80°
61°
14
81°
61°
15
81°
60°
16
80°
61°
17
79°
59°
18
77°
56°
19
75°
56°
20
75°
57°
21
77°
57°
22
77°
58°
23
80°
61°
24
81°
62°
25
81°
63°
26
82°
62°
27
82°
63°
28
81°
63°
29
82°
62°
30
81°
63°
31
78°
60°
1
78°
58°
2
79°
59°
3
78°
57°
4
74°
56°
5
74°
56°
6
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brea
Brea's May 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 52° and 63°. The average high for May is 78° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Brea. See also: June | July | August.
