S
M
T
W
T
F
S
27
59°
56°
28
58°
56°
29
67°
55°
30
67°
57°
1
77°
56°
2
86°
65°
3
69°
49°
4
64°
44°
5
71°
50°
6
62°
41°
7
67°
35°
8
73°
49°
9
68°
46°
10
61°
40°
11
59°
40°
12
72°
48°
13
60°
47°
14
70°
46°
15
64°
43°
16
68°
44°
17
56°
32°
18
56°
28°
19
59°
34°
20
69°
36°
21
60°
44°
22
67°
41°
23
59°
35°
24
60°
32°
25
67°
29°
26
72°
38°
27
55°
24°
28
54°
38°
29
69°
48°
30
72°
39°
31
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Brentwood
Brentwood's October 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 24° and 48°. The average high for October is 64° with an average low of 38°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Brentwood. See also: November | December | January.