S
M
T
W
T
F
S
27
72°
50°
28
72°
50°
29
71°
43°
30
70°
42°
1
65°
40°
2
65°
43°
3
69°
47°
4
70°
47°
5
61°
46°
6
64°
47°
7
68°
48°
8
69°
45°
9
70°
44°
10
68°
42°
11
62°
42°
12
63°
44°
13
60°
43°
14
58°
39°
15
61°
43°
16
64°
44°
17
65°
41°
18
66°
37°
19
63°
40°
20
57°
32°
21
58°
33°
22
53°
41°
23
56°
40°
24
62°
36°
25
58°
33°
26
54°
32°
27
53°
39°
28
52°
37°
29
59°
30°
30
59°
30°
31
60°
38°
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 52° to 72°, with overnight lows between 30° and 50°. The average high for October is 63° with an average low of 41°. 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.