S
M
T
W
T
F
S
27
84°
68°
28
77°
65°
29
85°
63°
30
80°
65°
1
76°
67°
2
90°
66°
3
102°
72°
4
101°
74°
5
100°
75°
6
91°
72°
7
84°
70°
8
80°
68°
9
77°
65°
10
80°
66°
11
73°
63°
12
69°
58°
13
72°
54°
14
82°
61°
15
91°
73°
16
96°
72°
17
93°
66°
18
86°
63°
19
82°
66°
20
75°
60°
21
74°
61°
22
75°
60°
23
73°
61°
24
78°
61°
25
78°
63°
26
77°
61°
27
76°
58°
28
78°
62°
29
77°
62°
30
79°
62°
31
78°
62°
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 73° to 96°, with overnight lows between 58° and 73°. The average high for October is 80° with an average low of 63°. 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.