S
M
T
W
T
F
S
26
77°
55°
27
81°
55°
28
73°
55°
29
73°
57°
30
64°
48°
1
68°
46°
2
63°
50°
3
63°
39°
4
75°
49°
5
77°
58°
6
70°
59°
7
67°
43°
8
67°
47°
9
72°
56°
10
74°
60°
11
70°
50°
12
64°
46°
13
72°
59°
14
73°
57°
15
73°
56°
16
75°
59°
17
77°
58°
18
77°
60°
19
77°
61°
20
79°
62°
21
74°
57°
22
73°
54°
23
70°
53°
24
71°
55°
25
73°
57°
26
75°
55°
27
72°
55°
28
73°
56°
29
74°
57°
30
76°
60°
31
75°
62°
1
76°
65°
2
77°
64°
3
76°
62°
4
76°
62°
5
79°
64°
6
82°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Brentwood
Brentwood's May 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 43° and 66°. The average high for May is 74° with an average low of 57°. 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 Brentwood. See also: June | July | August.