S
M
T
W
T
F
S
27
84°
57°
28
85°
51°
29
87°
52°
30
92°
57°
1
92°
62°
2
88°
69°
3
70°
64°
4
79°
63°
5
82°
55°
6
84°
50°
7
86°
58°
8
85°
51°
9
88°
62°
10
68°
63°
11
68°
54°
12
87°
59°
13
91°
61°
14
89°
64°
15
89°
64°
16
85°
54°
17
73°
48°
18
67°
46°
19
72°
50°
20
70°
48°
21
71°
44°
22
65°
48°
23
64°
40°
24
64°
39°
25
67°
45°
26
71°
46°
27
72°
44°
28
66°
38°
29
61°
39°
30
65°
43°
31
70°
47°
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 61° to 91°, with overnight lows between 38° and 64°. The average high for October is 74° with an average low of 50°. 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.